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General
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- Fully Supported
- Limitation
- Not Supported
- Information Only
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Pros
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- + Extensive platform support
- + Extensive data protection capabilities
- + Flexible deployment options
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- + Fast streamlined deployment
- + Strong VMware integration
- + Policy-based management
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- + Extensive QoS capabilities
- + Extensive data protection capabilities
- + Small form factor
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Cons
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- - No native data integrity verification
- - Dedup/compr not performance optimized
- - Disk/node failure protection not capacity optimized
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- - Single hypervisor and server hardware
- - No bare-metal support
- - Very limited native data protection capabilities
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- - No hybrid configurations
- - No stretched clustering
- - Single hypervisor support
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Content |
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WhatMatrix
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WhatMatrix
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WhatMatrix
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Assessment |
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Name: SANsymphony
Type: Software-only (SDS)
Development Start: 1998
First Product Release: 1999
NEW
DataCore was founded in 1998 and began to ship its first software-defined storage (SDS) platform, SANsymphony (SSY), in 1999. DataCore launched a separate entry-level storage virtualization solution, SANmelody (v1.4), in 2004. This platform was also the foundation for DataCores HCI solution. In 2014 DataCore formally announced Hyperconverged Virtual SAN as a separate product. In May 2018 integral changes to the software licensing model enabled consolidation because the core software is the same and since then cumulatively called DataCore SANsymphony.
One year later, in 2019, DataCore expanded its software-defined storage portfolio with a solution especially for the need of file virtualization. The additional SDS offering is called DataCore vFilO and operates as scale-out global file system across distributed sites spanning on-premises and cloud-based NFS and SMB shares.
Recently, at the beginning of 2021, DataCore acquired Caringo and integrated its know how and software-defined object storage offerings into the DataCore portfolio. The newest member of the DataCore SDS portfolio is called DataCore Swarm and together with its complementary offering SwarmFS and DataCore FileFly it enables customers to build on-premises object storage solutions that radically simplify the ability to manage, store, and protect data while allowing multi-protocol (S3/HTTP, API, NFS/SMB) access to any application, device, or end-user.
DataCore Software specializes in the high-tech fields of software solutions for block, file, and object storage. DataCore has by far the longest track-record when it comes to software-defined storage, when comparing to the other SDS/HCI vendors on the WhatMatrix.
In April 2021 the company had an install base of more than 10,000 customers worldwide and there were about 250 employees working for DataCore.
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Name: VxRail
Type: Hardware+Software (HCI)
Development Start: 2015
First Product Release: feb 2016
VCE was founded late 2009 by VMware, Cisco and EMC. The company is best known for its converged solutions VBlock and VxBlock. VCE started to ship its first hyper-converged solution, VxRack, late 2015, as part of the VMware EVO:RAIL program. In February 2016 VCE launced VxRail on Quanta server hardware. After completion of the Dell/EMC merger however, VxRail became part of the Dell EMC portfolio and the company switched to Dell server hardware.
VMware was founded early 2002 and began to ship its first Software Defined Storage solution, Virtual SAN (vSAN), in 2014. The vSAN solution is fully integrated into the vSphere Hypervisor platform. In 2015 VMware released major updates in the second itiration of the product and continues to improve the software ever since.
In August 2017 VxRail had an install base of approximately 3,000 customers worldwide.
At the end of May 2019 the company had a customer install base of more than 20,000 vSAN customers worldwide. This covers both vSAN and VxRail customers. At the end of May 2019 there were over 30,000 employees working for VMware worldwide.
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Name: NetApp HCI
Type: Hardware+Software (HCI)
Development Start: 2016
First Product Release: 2017
SolidFire, founded at the end of 2009, released its first Software Defined Storage (SDS) solution in november 2012. In february 2016 NetApp officially completed its acquisition of SolidFire, thus gaining acces to the SDS/HCI market.
NetApp HCIs (NetApp HCI) worldwide customer install base is unknown at this time. The number of employees working in the NetApp HCI division is also unknown at this time.
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GA Release Dates:
SSY 10.0 PSP12: jan 2021
SSY 10.0 PSP11: aug 2020
SSY 10.0 PSP10: dec 2019
SSY 10.0 PSP9: jul 2019
SSY 10.0 PSP8: sep 2018
SSY 10.0 PSP7: dec 2017
SSY 10.0 PSP6 U5: aug 2017
.
SSY 10.0: jun 2014
SSY 9.0: jul 2012
SSY 8.1: aug 2011
SSY 8.0: dec 2010
SSY 7.0: apr 2009
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SSY 3.0: 1999
NEW
10th Generation software. DataCore currently has the most experience when it comes to SDS/HCI technology, when comparing SANsymphony to other SDS/HCI platforms.
SANsymphony (SSY) version 3 was the first public release that hit the market back in 1999. The product has evolved ever since and the current major release is version 10. The list includes only the milestone releases.
PSP = Product Support Package
U = Update
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GA Release Dates:
VxRail 7.0.100 (vSAN 7.0 U1: nov 2020
VxRail 7.0 (vSAN 7.0): apr 2020
VxRail 4.7.410 (vSAN 6.7.3): dec 2019
VxRail 4.7.300 (vSAN 6.7.3): sep 2019
VxRail 4.7.212 (vSAN 6.7.2): jul 2019
VxRail 4.7.200 (vSAN 6.7.2): may 2019
VxRail 4.7.100 (vSAN 6.7.1): mar 2019
VxRail 4.7.001 (vSAN 6.7.1): dec 2018
VxRail 4.7.000 (vSAN 6.7.1): nov 2018
VxRail 4.5.225 (vSAN 6.6.1): oct 2018
VxRail 4.5.218 (vSAN 6.6.1): aug 2018
VxRail 4.5.210 (vSAN 6.6.1): may 2018
VxRail 4.5 (vSAN 6.6): sep 2017
VxRail 4.0 (vSAN 6.2): dec 2016
VxRail 3.5 (vSAN 6.2): jun 2016
VxRail 3.0 (vSAN 6.1): feb 2016
NEW
7th Generation VMware software on 14th Generation Dell server hardware.
VxRail is fueled by vSAN software. vSANs maturity has been increasing ever since the first iteration by expanding its range of features with a set of advanced functionality.
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GA Release Dates:
NetApp HCI 1.8P1: oct 2020
NetApp HCI 1.8: may 2020
NetApp HCI 1.7: sep 2019
NetApp HCI 1.6: jul 2019
NetApp HCI 1.4: nov 2018
NetApp HCI 1.3: jun 2018
NetApp HCI 1.2: mar 2018
NetApp HCI 1.1: dec 2017
NetApp HCI 1.0: oct 2017
NEW
12th Generation SolidFire software on whitelabel server hardware.
NetApp HCI is fueled by SolidFire Element OS software. SolidFires maturity has been increasing ever since the first iteration by expanding its range of features with a set of advanced functionality.
NetApp HCI v1.8P1 is based on Element OS 12.2.
Element OS 12.2: sep 2020
Element OS 12.0: may 2020
Element OS 11.5: sep 2019
Element OS 11.3: jul 2019
Element OS 11.1: mar 2019
Element OS 11.0: nov 2018
Element OS 10.4: aug 2018
Element OS 10.3: jun 2018
Element OS 10.2: mar 2018 (NetApp HCI-only)
Element OS 10.1: dec 2017
Element OS 10.0: nov 2017
Element OS 9.0: oct 2016
Element OS 8.0: jun 2015
Element OS 7.0: nov 2014
Element OS 6.0: apr 2014
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Pricing |
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Hardware Pricing Model
Details
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N/A
SANsymphony is sold by DataCore as a software-only solution. Server hardware must be acquired separately.
The entry point for all hardware and software compatibility statements is: https://www.datacore.com/products/sansymphony/tech/compatibility/
On this page links can be found to: Storage Devices, Servers, SANs, Operating Systems (Hosts), Networks, Hypervisors, Desktops.
Minimum server hardware requirements can be found at: https://www.datacore.com/products/sansymphony/tech/prerequisites/
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Per Node
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Per Node
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Software Pricing Model
Details
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Capacity based (per TB)
NEW
DataCore SANsymphony is licensed in three different editions: Enterprise, Standard, and Business.
All editions are licensed per capacity (in 1 TB steps). Except for the Business edition which has a fixed price per TB, the more capacity that is used by an end-user in each class, the lower the price per TB.
Each edition includes a defined feature set.
Enterprise (EN) includes all available features plus expanded Parallel I/O.
Standard (ST) includes all Enterprise (EN) features, except FC connections, Encryption, Inline Deduplication & Compression and Shared Multi-Port Array (SMPA) support with regular Parallel I/O.
Business (BZ) as entry-offering includes all essential Enterprise (EN) features, except Asynchronous Replication & Site Recovery, Encryption, Deduplication & Compression, Random Write Accelerator (RWA) and Continuous Data Protection (CDP) with limited Parallel I/O.
Customers can choose between a perpetual licensing model or a term-based licensing model. Any initial license purchase for perpetual licensing includes Premier Support for either 1, 3 or 5 years. Alternatively, term-based licensing is available for either 1, 3 or 5 years, always including Premier Support as well, plus enhanced DataCore Insight Services (predictive analytics with actionable insights). In most regions, BZ is available as term license only.
Capacity can be expanded in 1 TB steps. There exists a 10 TB minimum per installation for Business (BZ). Moreover, BZ is limited to 2 instances and a total capacity of 38 TB per installation, but one customer can have multiple BZ installations.
Cost neutral upgrades are available when upgrading from Business/Standard (BZ/ST) to Enterprise (EN).
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Per Node
NEW
Every VxRail 7.0.100 node comes bundled with:
- Dell EMC VxRail Manager 7.0.100
- VxRail Manager Plugin for VMware vCenter
- VMware vCenter Server Virtual Appliance (vCSA) 7.0 U1
- VMware vSphere 7.0 U1
- VMware vSAN 7.0 U1
- VMware vRealize Log Insight 8.1.1.0
- ESRS 3.46
As of VxRail 3.5 VMware vSphere licenses have to be purchased separately. VxRail nodes come pre-installed with VMware vSphere 6.7 U3 Patch01 and require a valid vSphere license key to be entered. VMware vSphere Data Protection (VDP) 6.1 is included as part of the vSphere license and is downloadable through the VxRail Manager.
VMware vSAN licenses have to be purchased separately as well. As of VxRail 4.7 there is a choice of either vSAN 6.7 U3 Standard, Advanced or Enterprise licenses.
Dell EMC VxRail 7.0.100 supports VMware Cloud Foundation (VCF) 4.1. VMware Cloud Foundation (VCF) is a unified SDDC platform that brings together VMware ESXi, VMware vSAN, VMware NSX, and optionally, vRealize Suite components, VMware NSX-T, VMware Enterprise PKS, and VMware Horizon 7 into one integrated stack.
Dell EMC VxRail 7.0 does not support VMware vLCM; vLCM is disabled in vCenter.
Dell EMC VxRail 7.0 does not support appliances based on the Quanta hardware platform.
Dell EMC VxRail 7.0 does not support RecoverPoint for Virtual Machines (RP4VM).
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Per Node
Capacity based (per TB)
NetApp HCI software licensing is separate from hardware pricing. The decoupling provides a choice between per node and capacity pricing. The capacity pricing model allows usage of the licensed storage capacity across an entire enterprise (multiple sites, multiple solutions). Currently 25TB and 100TB packs exist.
There are no separate software editions with regards to NetApp HCI. Each node comes equiped with an all-inclusive feature set. This means that without exception all storage software capabilities are available for use.
NetApp HCI can be connected to NetApp Cloud Central to enable additional features and services such as Kubernetes-as-a-Service with NetApp Kubernetes Service and fileservices-as-a-Service with NetApp Cloud Volumes. Some cloud services come with an additional charge.
The NetApp HCI solution comes with a 90-day trial license for VMware, which allows the NetApp Deployment Engine (NDE) to install and configure the VMware software. VMware software licenses must be purchased separately.\
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Support Pricing Model
Details
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Capacity based (per TB)
Support is always provided on a premium (24x7) basis, including free updates.
More information about DataCores support policy can be found here:
http://datacore.custhelp.com/app/answers/detail/a_id/1270/~/what-is-datacores-support-policy-for-its-products
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Per Node
Dell EMC offers two types of VxRail Appliance Support:
- Enhanced provides 24x7 support for production environments, including around-the-clock technical support, next business day onsite response, proactive remote monitoring and resolution, and installation of non customer replaceable units.
- Premium provides mission critical support for fastest resolution, including 24x7 technical support and monitoring, priority onsite response for critical issues, installation of operating environment updates, and installation of all replacement parts.
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Per Node
With regards to NetApp HCI there are three support offerings:
- SupportEdge Standard
- SupportEdge Premium
- SupportEdge Secure for Government (onsite and parts delivery)
All three options include hardware support (both compute and storage), software support, VMware support, upgrades and patch entitlement, access to NetApp Support site assets and the Knowledge Base, and full access to the HCI Technical Support team.
SupportEdge Standard:
- Next-Business-Day (NBD) hardware replacement.
SupportEdge Premium:
- 4-Hour hardware replacement
- Priority placement in the technical support queuing system
Customers may call VMware directly or call NetApp Technical Support when it comes to VMware-specific support questions.
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Design & Deploy
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Design |
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Consolidation Scope
Details
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Storage
Data Protection
Management
Automation&Orchestration
DataCore is storage-oriented.
SANsymphony Software-Defined Storage Services are focused on variable deployment models. The range covers classical Storage Virtualization over Converged and Hybrid-Converged to Hyperconverged including a seamless migration between them.
DataCore aims to provide all key components within a storage ecosystem including enhanced data protection and automation & orchestration.
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Hypervisor
Compute
Storage
Network (limited)
Data Protection (limited)
Management
Automation&Orchestration
VMware is stack-oriented, whereas the VxRail platform itself is heavily storage-focused.
With the vSAN/VxRail platforms VMware aims to provide all functionality required in a Private Cloud ecosystem.
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Compute
Storage
Data Protection
Management
Automation&Orchestration
Both NetApp and the NetApp HCI platform are storage-oriented.
With the NetApp HCI platform NetApp aims to provide key components within a Private Cloud ecosystem as well as integration with existing hypervisors and applications.
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1, 10, 25, 40, 100 GbE (iSCSI)
8, 16, 32, 64 Gbps (FC)
The bandwidth required depends entirely on the specifc workload needs.
SANsymphony 10 PSP11 introduced support for Emulex Gen 7 64 Gbps Fibre Channel HBAs.
SANsymphony 10 PSP8 introduced support for Gen6 16/32 Gbps ATTO Fibre Channel HBAs.
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1, 10, 25 GbE
VxRail hardware models include redundant ethernet connectivity using SFP+ or Base-T. Dell EMC recommends at least 10GbE to avoid the network becoming a performance bottleneck.
VxRail 4.7 added automatic network configuration support for select Dell top-of-rack (TOR)
switches.
VxRail 4.7.211 added support for Qlogic and Mellanox NICs, as well as SmartFabric support for Dell EMC S5200 25Gb TOR switches.
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10/25 GbE (iSCSI)
NetApp HCI compute and storage nodes use Ethernet connectivity for storage traffic; two SFP+ (10 GbE) or SFP28 (25GbE) interfaces can be dedicated to storage. On compute nodes, all traffic including storage can also be converged on just two SFP+/SFP28 interfaces.
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Overall Design Complexity
Details
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Medium
DataCore SANsymphony is able to meet many different use-cases because of its flexible technical architecture, however this also means there are a lot of design choices that need to be made. DataCore SANsymphony seeks to provide important capabilities either natively or tightly integrated, and this keeps the design process relatively simple. However, because many features in SANsymphony are optional and thus can be turned on/off, in effect each one needs to be taken into consideration when preparing a detailed design.
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Medium
Dell EMC VxRail was developed with simplicity in mind, both from a design and a deployment perspective. VMware vSANs uniform platform architecture, running at the core of VxRail, is meant to be applicable to all virtualization use-cases and seeks to provide important capabilities either natively or by leveraging features already present in the VMware hypervisor, vSphere, on a per-VM basis. As there is no tight integration involved, especially with regard to data protection choices need to made whether to incorporate 1st party of 3rd party solutions into the overall technical design.
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Low
NetApp HCI was developed with simplicity in mind, both from a design and a deployment perspective. NetApp HCIs uniform platform architecture is meant to be applicable to a wide variety of use-cases and seeks to provide important capabilities natively. There are only a handful of storage building blocks to choose from, and many advanced capabilities like deduplication and compression are always turned on. This minimizes the amount of design choices as well as the number of deployment steps.
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External Performance Validation
Details
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SPC (Jun 2016)
ESG Lab (Jan 2016)
SPC (Jun 2016)
Title: 'Dual Node, Fibre Channel SAN'
Workloads: SPC-1
Benchmark Tools: SPC-1 Workload Generator
Hardware: All-Flash Lenovo x3650, 2-node cluster, FC-connected, SSY 10.0, 4x All-Flash Dell MD1220 SAS Storage Arrays
SPC (Jun 2016)
Title: 'Dual Node, High Availability, Hyper-converged'
Workloads: SPC-1
Benchmark Tools: SPC-1 Workload Generator
Hardware: All-Flash Lenovo x3650, 2-node cluster, FC-interconnect, SSY 10.0
ESG Lab (Jan 2016)
Title: 'DataCore Application-adaptive Data Infrastructure Software'
Workloads: OLTP
Benchmark Tools: IOmeter
Hardware: Hybrid (Tiered) Dell PowerEdge R720, 2-node cluster, SSY 10.0
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StorageReview (dec 2018)
Principled Technologies (jul 2017, jun 2017)
StorageReview (Dec 2018)
Title: 'Dell EMC VxRail P570F Review'
Workloads: MySQL OLTP, MSSQL OLTP, Generic profiles
Benchmark Tools: Sysbench (MySQL), TPC-C (MSSQL), Vdbench (generic)
Hardware: All-Flash Dell EMC VxRail P570F, vSAN 6.7
Principled Technologies (Jul 2017)
Title: 'Handle more orders with faster response times, today and tomorrow'
Workloads: MSSQL OLTP
Benchmark Tools: DS2 (MSSQL)
Hardware: All-Flash Dell EMC VxRail P470F, 4-node cluster, VxRail 4.0 (vSAN 6.2)
Principled Technologies (Jun 2017)
Title: 'Empower your databases with strong, efficient, scalable performance'
Workloads: MSSQL OLTP
Benchmark Tools: DS2 (MSSQL)
Hardware: All-Flash Dell EMC VxRail P470F, 4-node cluster, VxRail 4.0 (vSAN 6.2)
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Evaluator Group (aug 2019)
Evaluator Group (Aug 2019)
Title: 'Scaling Performance for Enterprise HCI Environments'
Workloads: Mix (MS Exchange, Olio, Web, Database), VDI
Benchmark Tools: IOmark-VM (all), IOmark-VDI
Hardware: H410S, 5-node cluster, NetApp HCI 1.x
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Evaluation Methods
Details
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Free Trial (30-days)
Proof-of-Concept (PoC; up to 12 months)
SANsymphony is freely downloadble after registering online and offers full platform support (complete Enterprise feature set) but is scale (4 nodes), capacity (16TB) and time (30 days) restricted, what all can be expanded upon request. The free trial version of SANsymphony can be installed on all commodity hardware platforms that meet the hardware requirements.
For more information please go here: https://www.datacore.com/try-it-now/
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Proof-of-Concept (POC)
vSAN: Free Trial (60-days)
vSAN: Online Lab
VxRail 7.0 runs VMware vSAN 7.0 software at its core. vSAN Evaluation is freely downloadble after registering online. Because it is embedded in the hypervisor, the free trial includes vSphere and vCenter Server. vSAN Evaluation can be installed on all commodity hardware platforms that meet the hardware requirements. vSAN Evaluation use is time-restricted (60-days). vSAN Evaluation is not for production environments.
VMware also offers a vSAN hosted hands-on lab that lets you deploy, configure and manage vSAN in a contained environment, after registering online.
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Proof-of-Concept (PoC)
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Deploy |
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Deployment Architecture
Details
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Single-Layer
Dual-Layer
Single-Layer = servers function as compute nodes as well as storage nodes.
Dual-Layer = servers function only as storage nodes; compute runs on different nodes.
Single-Layer:
- SANsymphony is implemented as virtual machine (VM) or in case of Hyper-V as service layer on Hyper-V parent OS, managing internal and/or external storage devices and providing virtual disks back to the hypervisor cluster it is implemented in. DataCore calls this a hyper-converged deployment.
Dual-Layer:
- SANsymphony is implemented as bare metal nodes, managing external storage (SAN/NAS approach) and providing virtual disks to external hosts which can be either bare metal OS systems and/or hypervisors. DataCore calls this a traditional deployment.
- SANsymphony is implemented as bare metal nodes, managing internal storage devices (server-SAN approach) and providing virtual disks to external hosts which can be either bare metal OS systems and/or hypervisors. DataCore calls this a converged deployment.
Mixed:
- SANsymphony is implemented in any combination of the above 3 deployments within a single management entity (Server Group) acting as a unified storage grid. DataCore calls this a hybrid-converged deployment.
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Single-Layer
Single-Layer: VMware vSAN is meant to be used as a storage platform as well as a compute platform at the same time. This effectively means that applications, hypervisor and storage software are all running on top of the same server hardware (=single infrastructure layer).
VMware vSAN can partially serve in a dual-layer model by providing storage also to other vSphere hosts within the same cluster that do not contribute storage to vSAN themselves or to bare metal hosts. However, this is not a primary use case and also requires the other vSphere hosts to have vSAN enabled (Please view the compute-only scale-out option for more information).
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Dual-Layer
Single-Layer = servers function as compute nodes as well as storage nodes.
Dual-Layer = servers function only as storage nodes; compute runs on different nodes.
Dual-Layer: NetApp HCI is implemented exclusively in a dual-layer architecture consisting of compute-only nodes in one layer and storage-only nodes in a separate layer. This design choice was intentional as to allow for maximum flexibility and performance predictability.
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Deployment Method
Details
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BYOS (some automation)
BYOS = Bring-Your-Own-Server-Hardware
DataCore SANsymphony is made easy by providing a very straightforward implementation approach.
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Turnkey (very fast; highly automated)
Because of the ready-to-go Hyper Converged Infrastructure (HCI) building blocks and the setup wizard provided by Dell EMC, customer deployments can be executed in hours instead of days.
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Turnkey (very fast; highly automated)
Because of the ready-to-go Hyper Converged Infrastructure (HCI) building blocks and the setup wizard provided by NetApp, customer deployments can be executed in hours instead of days.
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Workload Support
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Virtualization |
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Hypervisor Deployment
Details
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Virtual Storage Controller
Kernel (Optional for Hyper-V)
The SANsymphony Controller is deployed as a pre-configured Virtual Machine on top of each server that acts as a part of the SANsymphony storage solution and commits its internal storage and/or externally connected storage to the shared resource pool. The Virtual Storage Controller (VSC) can be configured direct access to the physical disks, so the hypervisor is not impeding the I/O flow.
In Microsoft Hyper-V environments the SANsymphony software can also be installed in the Windows Server Root Partition. DataCore does not recommend installing SANsymphony in a Hyper-V guest VM as it introduces virtualization layer overhead and obstructs DataCore Software from directly accessing CPU, RAM and storage. This means that installing SANsymphony in the Windows Server Root Partition is the preferred deployment option. More information about the Windows Server Root Partition can be found here: https://docs.microsoft.com/en-us/windows-server/administration/performance-tuning/role/hyper-v-server/architecture
The DataCore software can be installed on Microsoft Windows Server 2019 or lower (all versions down to Microsoft Windows Server 2012/R2).
Kernel Integrated, Virtual Controller and VIB are each distributed architectures, having one active component per virtualization host that work together as a group. All three architectures are capable of delivering a complete set of storage services and good performance. Kernel Integrated solutions reside within the protected lower layer, VIBs reside just above the protected kernel layer, and Virtual Controller solutions reside in the upper user layer. This makes Virtual Controller solutions somewhat more prone to external actions (eg. most VSCs do not like snapshots). On the other hand Kernel Integrated solutions are less flexible because a new version requires the upgrade of the entire hypervisor platform. VIBs have the middle-ground, as they provide more flexibility than kernel integrated solutions and remain relatively shielded from the user level.
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Kernel Integrated
Virtual SAN is embedded into the VMware hypervisor. This means it does not require any Controller VMs to be deployed on top of the hypervisor platform.
Kernel Integrated, Virtual Controller and VIB are each distributed architectures, having one active component per virtualization host that work together as a group. All three architectures are capable of delivering a complete set of storage services and good performance. Kernel Integrated solutions reside within the protected lower layer, VIBs reside just above the protected kernel layer, and Virtual Controller solutions reside in the upper user layer. This makes Virtual Controller solutions somewhat more prone to external actions (eg. most VSCs do not like snapshots). On the other hand Kernel Integrated solutions are less flexible because a new version requires the upgrade of the entire hypervisor platform. VIBs have the middle-ground, as they provide more flexibility than kernel integrated solutions and remain relatively shielded from the user level.
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None
Because of the design choice to keep compute and storage fully separated, the storage is served from the storage node cluster to the compute node cluster through the iSCSI storage protocol. In effect no solution components, eg. virtual storage controllers, need to be deployed on top of the compute nodes.
Kernel Integrated, Virtual Controller and VIB are each distributed architectures, having one active component per virtualization host that work together as a group. All three architectures are capable of delivering a complete set of storage services and good performance. Kernel Integrated solutions reside within the protected lower layer, VIBs reside just above the protected kernel layer, and Virtual Controller solutions reside in the upper user layer. This makes Virtual Controller solutions somewhat more prone to external actions (eg. most VSCs do not like snapshots). On the other hand Kernel Integrated solutions are less flexible because a new version requires the upgrade of the entire hypervisor platform. VIBs have the middle-ground, as they provide more flexibility than kernel integrated solutions and remain relatively shielded from the user level.
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Hypervisor Compatibility
Details
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VMware vSphere ESXi 5.5-7.0U1
Microsoft Hyper-V 2012R2/2016/2019
Linux KVM
Citrix Hypervisor 7.1.2/7.6/8.0 (XenServer)
'Not qualified' means there is no generic support qualification due to limited market footprint of the product. However, a customer can always individually qualify the system with a specific SANsymphony version and will get full support after passing the self-qualification process.
Only products explicitly labeled 'Not Supported' have failed qualification or have shown incompatibility.
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VMware vSphere ESXi 7.0 U1
NEW
VMware Virtual SAN is an integral part of the VMware vSphere platform; As such it cannot be used with any other hypervisor platform.
Dell EMC VxRail and vSAN support a single hypervisor in contrast to other SDS/HCI products that support multiple hypervisors.
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VMware vSphere ESXi 6.5U2-7.0
(Microsoft Hyper-V)
(Red Hat KVM)
The NetApp HCI Deployment Engine currently supports a single hypervisor (VMware vSphere), whereas other platforms support multiple hypervisors.
NetApp HCI v1.8 supports VMware vSphere 6.5U2-6.5U3, 6.7U1-6.7U3 and 7.0.
VMware vSphere 6.5U2 and 6.7U1 are also supported for initial deployments as well as expansions of existing environments. VMware vSphere 6.0 is no longer supported as it reached end-of-life on March 12, 2020.
Microsoft Hyper-V or Red Hat KVM hypervisors can be manually installed on the NetApp HCI compute nodes. However, support for such a particular combination can only be obtained via the NetApp Feature Product Variance Request (FPVR) process.
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Hypervisor Interconnect
Details
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iSCSI
FC
The SANsymphony software-only solution supports both iSCSI and FC protocols to present storage to hypervisor environments.
DataCore SANsymphony supports:
- iSCSI (Switched and point-to-point)
- Fibre Channel (Switched and point-to-point)
- Fibre Channel over Ethernet (FCoE)
- Switched, where host uses Converged Network Adapter (CNA), and switch outputs Fibre Channel
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vSAN (incl. WSFC)
VMware uses a propietary protocol for vSAN.
vSAN 6.1 and upwards support the use of Microsoft Failover Clustering (MSFC). This includes MS Exchange DAG and SQL Always-On clusters when a file share witness quorum is used. The use of a failover clustering instance (FCI) is not supported.
vSAN 6.7 and upwards support Windows Server Failover Clustering (WSFC) by building WSFC targets on top of vSAN iSCSI targets. vSAN iSCSI target service supports SCSI-3 Persistent Reservations for shared disks and transparent failover for WSFC. WSFC can run on either physical servers or VMs.
vSAN 6.7 U3 introduced native support for SCSI-3 Persistent Reservations (PR), which enables Windows Server Failover Clusters (WSFC) to be directly deployed on native vSAN VMDKs. This capability enables migrations from legacy deployments on physical RDMs or external storage protocols to VMware vSAN.
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iSCSI
NetApp HCI only supports the iSCSI protocol in order to present storage to hypervisor hosts, bare-metal hosts and VMs.
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Bare Metal |
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Bare Metal Compatibility
Details
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Microsoft Windows Server 2012R2/2016/2019
Red Hat Enterprise Linux (RHEL) 6.5/6.6/7.3
SUSE Linux Enterprise Server 11.0SP3+4/12.0SP1
Ubuntu Linux 16.04 LTS
CentOS 6.5/6.6/7.3
Oracle Solaris 10.0/11.1/11.2/11.3
Any operating system currently not qualified for support can always be individually qualified with a specific SANsymphony version and will get full support after passing the self-qualification process.
SANsymphony provides virtual disks (block storage LUNs) to all of the popular host operating systems that use standard disk drives with 512 byte or 4K byte sectors. These hosts can access the SANsymphony virtual disks via SAN protocols including iSCSI, Fibre Channel (FC) and Fibre Channel over Ethernet (FCoE).
Mainframe operating systems such as IBM z/OS, z/TPF, z/VSE or z/VM are not supported.
SANsymphony itself runs on Microsoft Windows Server 2012/R2 or higher.
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N/A
Dell EMC VxRail does not support any non-hypervisor platforms.
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RHEL 7.4-8.1 (KVM)
Windows Server 2016-2019 (Hyper-V)
VMware vSphere 6.5-7.0
Citrix XenServer 7.4-7.6
Citrix Hypervisor 8.0-8.1
NetApp HCI volumes can be allocated to external hosts that support the iSCSI protocol, such as external (=non-NetApp HCI) VMware clusters, Hyper-V hosts, OpenStack hosts, Bare Metal Windows hosts and Bare Metal Linux hosts.
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Bare Metal Interconnect
Details
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iSCSI
FC
FCoE
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N/A
Dell EMC VxRail does not support any non-hypervisor platforms.
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iSCSI
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Containers |
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Container Integration Type
Details
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Built-in (native)
DataCore provides its own Volume Plugin for natively providing Docker container support, available on Docker Hub.
DataCore also has a native CSI integration with Kubernetes, available on Github.
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Built-in (Hypervisor-based, vSAN supported)
VMware vSphere Docker Volume Service (vDVS) technology enables running stateful containers backed by storage technology of choice in a vSphere environment.
vDVS comprises of Docker plugin and vSphere Installation Bundle which bridges the Docker and vSphere ecosystems.
vDVS abstracts underlying enterprise class storage and makes it available as docker volumes to a cluster of hosts running in a vSphere environment. vDVS can be used with enterprise class storage technologies such as vSAN, VMFS, NFS and VVol.
vSAN 6.7 U3 introduces support for VMware Cloud Native Storage (CNS). When Cloud Native Storage is used, persistent storage for containerized stateful applications can be created that are capable of surviving restarts and outages. Stateful containers orchestrated by Kubernetes can leverage storage exposed by vSphere (vSAN, VMFS, NFS) while using standard Kubernetes volume, persistent volume, and dynamic provisioning primitives.
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Built-in (native)
NetApp provides its own software plugins for container support (both Docker and Kubernetes) through its Trident open-source project.
More information can be found here: https://netapp-trident.readthedocs.io
NetApp also developed its own container platform software called 'NetApp Kubernetes Service'. NKS provides on-premises Kubernetes-as-a-Service (KaaS) in order to enable end-users to quickly adopt container services.
NetApp Kubernetes Service (NKS) is not a hard requirement for running Docker containers and Kubernetes on top of NetApp HCI, however it does make it easier to use and consume.
NKS system size requirements for NetApp HCI environments:
- 2x4 systems are not supported for production use. However, these can be used for demo work.
- 3x4 systems are the minimum production system size supported by NetApp.
- 4x4 systems are the recommended minimum size.
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Container Platform Compatibility
Details
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Docker CE/EE 18.03+
Docker EE = Docker Enterprise Edition
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Docker CE 17.06.1+ for Linux on ESXi 6.0+
Docker EE/Docker for Windows 17.06+ on ESXi 6.0+
Docker CE = Docker Community Edition
Docker EE = Docker Enterprise Edition
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Docker EE 17.06+
Trident should work with any distribution of Docker or Kubernetes that uses one of the supported versions as a base, such as Rancher or Tectonic.
NetApp Kubernetes Service (NKS) is a Pure Upstream K8s play. This means that NetApp will support the latest release within a week.
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Container Platform Interconnect
Details
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Docker Volume plugin (certified)
The DataCore SDS Docker Volume plugin (DVP) enables Docker Containers to use storage persistently, in other words enables SANsymphony data volumes to persist beyond the lifetime of both a container or a container host. DataCore leverages SANsymphony iSCSI and FC to provide storage to containers. This effectively means that the hypervisor layer is bypassed.
The Docker SDS Volume plugin (DVP) is officially 'Docker Certified' and can be downloaded from the Docker Hub. The plugin is installed inside the Docker host, which can be either a VM or a Bare Metal Host connect to a SANsymphony storage cluster.
For more information please go to: https://hub.docker.com/plugins/datacore-sds-volume-plugin
The Kubernetes CSI plugin can be downloaded from GitHub. The plugin is automatically deployed as several pods within the Kubernetes system.
For more information please go to: https://github.com/DataCoreSoftware/csi-plugin
Both plugins are supported with SANsymphony 10 PSP7 U2 and later.
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Docker Volume Plugin (certified) + VMware VIB
vSphere Docker Volume Service (vDVS) can be used with VMware vSAN, as well as VMFS datastores and NFS datastores served by VMware vSphere-compatible storage systems.
The vSphere Docker Volume Service (vDVS) installation has two parts:
1. Installation of the vSphere Installation Bundle (VIB) on ESXi.
2. Installation of Docker plugin on the virtualized hosts (VMs) where you plan to run containers with storage needs.
The vSphere Docker Volume Service (vDVS) is officially 'Docker Certified' and can be downloaded from the online Docker Store.
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Docker Volume Plugin (certified)
The NetApp 'Trident' plugin, previously known as 'NetApp Docker Volume Plugin (nDVP)', is a block volume plugin that connects containers to persistent storage served by NetApp HCI/SolidFire.
The 'NetApp Docker Volume Plugin (nDVP)' plugin is officially 'Docker Certified' and can be downloaded from the online Docker Store.
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Container Host Compatibility
Details
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Virtualized container hosts on all supported hypervisors
Bare Metal container hosts
The DataCore native plug-ins are container-host centric and as such can be used across all SANsymphony-supported hypervisor platforms (VMware vSphere, Microsoft Hyper-V, KVM, XenServer, Oracle VM Server) as well as on bare metal platforms.
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Virtualized container hosts on VMware vSphere hypervisor
Because the vSphere Docker Volume Service (vDVS) and vSphere Cloud Provider (VCP) are tied to the VMware Sphere platform, they cannot be used for bare metal hosts running containers.
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Virtualized container hosts on all supported hypervisors
Bare Metal container hosts
The NetApp Trident native plugins are container-host centric and as such can be used across all NetApp HCI-supported hypervisor platforms (VMware vSphere) as well as on bare metal platforms.
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Container Host OS Compatbility
Details
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Linux
All Linux versions supported by Docker CE/EE 18.03+ or higher can be used.
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Linux
Windows 10 or 2016
Any Linux distribution running version 3.10+ of the Linux kernel can run Docker.
vSphere Storage for Docker can be installed on Windows Server 2016/Windows 10 VMs using the PowerShell installer.
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RHEL
CentOS
Ubuntu
Debian
NetApp Trident has been qualified for the mentioned Linux operating systems.
Container hosts running the Windows OS are not (yet) supported.
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Container Orch. Compatibility
Details
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Kubernetes 1.13+
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VCP: Kubernetes 1.6.5+ on ESXi 6.0+
CNS: Kubernetes 1.14+
vSAN 6.7 U3 introduced support for VMware Cloud Native Storage (CNS).
When Cloud Native Storage (CNS) is used, persistent storage for containerized stateful applications can be created that are capable of surviving restarts and outages. Stateful containers orchestrated by Kubernetes can leverage storage exposed by vSphere (vSAN, VMFS, NFS, vVols) while using standard Kubernetes volume, persistent volume, and dynamic provisioning primitives.
VCP = vSphere Cloud Provider
CSI = Container Storage Interface
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Kubernetes 1.9+
NetApp HCI v1.6 and up provide the ability to deploy managed Kubernetes clusters by leveraging NetApp Kubernetes Service (NKS).
The SolidFire driver does not support Docker Swarm.
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Container Orch. Interconnect
Details
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Kubernetes CSI plugin
The Kubernetes CSI plugin provides several plugins for integrating storage into Kubernetes for containers to consume.
DataCore SANsymphony provides native industry standard block protocol storage presented over either iSCSI or Fibre Channel. YAML files can be used to configure Kubernetes for use with DataCore SANsymphony.
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Kubernetes Volume Plugin
The VMware vSphere Container Storage Interface (CSI) Volume Driver for Kubernetes leverages vSAN block storage and vSAN file shares to provide scalable, persistent storage for stateful applications.
Kubernetes contains an in-tree CSI Volume Plug-In that allows the out-of-tree VMware vSphere CSI Volume Driver to gain access to containers and provide persistent-volume storage. The plugin runs in a pod and dynamically provisions requested PersistentVolumes (PVs) using vSAN block storage and vSAN native files shares dynamically provisioned by VMware vSAN File Services.
The VMware vSphere CSI Volume Driver requires Kubernetes v1.14 or later and VMware vSAN 6.7 U3 or later. vSAN File Services requires VMware vSAN/vSphere 7.0.
vSphere Cloud Provider (VCP) for Kubernetes allows Pods to use enterprise grade persistent storage. VCP supports every storage primitive exposed by Kubernetes:
- Volumes
- Persistent Volumes (PV)
- Persistent Volumes Claims (PVC)
- Storage Class
- Stateful Sets
Persistent volumes requested by stateful containerized applications can be provisioned on vSAN, vVol, VMFS or NFS datastores.
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Kubernetes Volume Plugin
The NetApp Trident Volume Plugin for Kubernetes allows deploying Pods with Persistent Volumes. Both Static Provisioning and Dynamic Provisioning are supported.
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VDI |
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VDI Compatibility
Details
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VMware Horizon
Citrix XenDesktop
There is no validation check being performed by SANsymphony for VMware Horizon or Citrix XenDesktop VDI platforms. This means that all versions supported by these vendors are supported by DataCore.
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VMware Horizon
Citrix XenDesktop
Dell EMC has published Reference Architecture whitepapers for both VMware Horizon and Citrix XenDesktop platforms.
Dell EMC VxRail 4.7.211 supports VMware Horizon 7.7
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VMware Horizon
Citrix XenDesktop
Support for VMware Horizon and Citrix XenDesktop is a function of the underlying hypervisor support; ESXi 6.x is supported by NetApp HCI. In addition to the broad support, there is an additional whitepaper on VMware Horizon 7 on NetApp HCI: https://www.netapp.com/us/media/tr-4630.pdf
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VMware: 110 virtual desktops/node
Citrix: 110 virtual desktops/node
DataCore has not published any recent VDI reference architecture whitepapers. The only VDI related paper that includes a Login VSI benchmark dates back to december 2010. There a 2-node SANsymphony cluster was able to sustain a load of 220 VMs based on the Login VSI 2.0.1 benchmark.
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VMware: up to 160 virtual desktops/node
Citrix: up to 140 virtual desktops/node
VMware Horizon 7.7: Load bearing number is based on Login VSI tests performed on hybrid VxRail V570F appliances using 2 vCPU Windows 10 desktops and the Knowledge Worker profile.
Citrix XenDesktop 7.15: Load bearing number is based on Login VSI tests performed on hybrid VxRail V570F-B appliances using 2 vCPU Windows 10 desktops and the Knowledge Worker profile.
For detailed information please view the corresponding reference architecture whitepapers.
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VMware: up to 139 virtual desktops/node
Citrix: unknown
VMware Horizon 7.6: Load bearing number is based on Login VSI tests performed on small and large compute+storage appliances using 2vCPU Windows 10 1803 desktops and the Knowledge Worker profile. The referenced test result of 110 desktop VMs is based on a NetApp HCI H410C 8-node compute cluster and a NetApp HCI H500S 4-node storage cluster configuration.
For detailed information please view the corresponding whitepaper (NVA-1132-DEPLOY) dated May 2019.
VMware Horizon 7.2: Load bearing number is based on Login VSI tests performed on small and large compute+storage appliances using 2vCPU Windows 10 desktops and the Knowledge Worker profile. The referenced test result of 139 desktop VMs is based on a NetApp HCI H700E Spectre and Meltdown postpatch configuration.
For detailed information please view the corresponding whitepaper (tr-4630) dated July 2018.
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Server Support
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Server/Node |
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Hardware Vendor Choice
Details
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Many
SANsymphony runs on all server hardware that supports x86 - 64bit.
DataCore provides minimum requirements for hardware resources.
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Dell
Dell EMC uses a single brand of server hardware for its VxRail solution. Since completion of the Dell/EMC merger, Dell EMC has shifted from Quanta to Dell PowerEdge server hardware. This coincides with the VxRail 4.0 release (dec 2016).
In november 2017 Dell refreshed its VxRail hardware base with 14th Generation Dell PowerEdge server hardware.
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Super Micro
Quanta Cloud Technology
NetApp HCI uses Super Micro Twin Squared (2U-4node) chassis for H300E/H500E/H700E/H410C compute nodes and H410S-0, H410S-1 and H410S-2 storage nodes.
NetApp HCI uses QCT QuantaGrid 1U servers for H610S storage nodes, and 2U servers for H610C compute nodes.
All types of nodes can be mixed and matched in a cluster.
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Many
SANsymphony runs on all server hardware that supports x86 - 64bit.
DataCore provides minimum requirements for hardware resources.
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5 Dell (native) Models (E-, G-, P-, S- and V-Series)
Different models are available for different workloads and use cases:
E Series (1U-1Node) - Entry Level
G Series (2U-4Node) - High Density
V Series (2U-1Node) - VDI Optimized
P Series (2U-1Node) - Performance Optimized
S Series (2U-1Node) - Storage Dense
E-, G-, V- and P-Series can be acquired as Hybrid or All-Flash appliance. S-Series can only be acquired as Hybrid appliance.
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6 models (3x compute + 3x storage) + several sub-models
There are 3 compute models to choose from:
H410C (Small/Medium/Large)
H610C (Graphic) 2U
H615C (Graphic) 1U
There are 3 storage models to choose from:
H410S (General Purpose) 2U/4nodes
H610S (High Perf Large) 1U
H610S-2F (FIPS 140-2 Drive Encryption) 1U
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1, 2 or 4 nodes per chassis
Note: Because SANsymphony is mostly hardware agnostic, customers can opt for multiple server densities.
Note: In most cases 1U or 2U building blocks are used.
Also Super Micro offers 2U chassis that can house 4 compute nodes.
Denser nodes provide a smaller datacenter footprint where space is a concern. However, keep in mind that the footprint for other datacenter resources such as power and heat and cooling is not necessarily reduced in the same way and that the concentration of nodes can potentially pose other challenges.
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1 or 4 nodes per chassis
The VxRail Appliance architecture uses a combination of 1U-1Node, 2U-1Node and 2U-4Node building blocks.
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1 node per chassis
4 nodes per chassis
NetApp HCI 410C compute nodes and 410S storage nodes are delivered in 2U/4-node building blocks. Compute nodes and storage nodes can be mixed within the same chassis.
NetApp HCI H615C compute nodes and H610S storage nodes are delivered in 1U building blocks.
NetApp HCI H610C compute nodes are delivered in 2U building blocks.
Denser nodes provide a smaller datacenter footprint where space is a concern. However, keep in mind that the footprint for other datacenter resources such as power and heat and cooling is not necessarily reduced in the same way and that the concentration of nodes can potentially pose other challenges.
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Yes
DataCore does not explicitly recommend using different hardware platforms, but as long as the hardware specs are somehow comparable, there is no reason to insist on one or the other hardware vendor. This is proven in practice, meaning that some customers run their productive DataCore environment on comparable servers of different vendors.
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Yes
Dell EMC allows mixing of different VxRail Appliance models within a cluster, except where doing so would create highly unbalanced performance. The first 4 cluster nodes do not have to be identical anymore (previous requirement). All G Series nodes within the same chassis must be identical. No mixing is allowed between hybrid and all-flash nodes within the same storage cluster. All nodes within the same cluster must run the same version of VxRail software.
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Yes
Compute and storage nodes can be mixed and matched as long as best practices are adhered to.
NetApp HCI allows any storage node type to be mixed within a single cluster, however one important rule is mandatory: no one storage node can be more than one-third of the total cluster capacity for high-availabity and self-healing purposes.
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Components |
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Flexible
Minimum hardware requirements need to be fulfilled.
For more information please go to: https://www.datacore.com/products/sansymphony/tech/compatibility/
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Flexible
VxRail offers multiple CPU options in each hardware model.
E-Series can have single or dual socket, and up to 28 cores/CPU.
G-Series can have single or dual socket, and up to 28 cores/CPU.
P-Series can have dual or quad socket, and up to 28 cores/CPU.
S-Series can have single or dual socket, and up to 28 cores/CPU.
V-Series can have dual socket, and up to 28 cores/CPU.
VxRail on Dell PowerEdge 14G servers are equiped with Intel Xeon Scalable processors (Skylake and Cascade Lake).
Dell EMC VxRail 4.7.211 introduced official support for the 2nd generation Intel Xeon Scalable (Cascade Lake) processors.
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Flexible (up to 5 options)
NetApp HCI Compute nodes:
H410C (Small/Medium/Large): 2x Intel Xeon Silver 4110, Gold 5120, Gold 5122, Gold 6138
H610C (Graphic): 2x Intel Xeon Gold 6130
H615C (Graphic): 2x Intel Xeon Silver 4214, Gold 5222, Gold 6242, Gold 6252, Gold 6240Y
H615C compute nodes ship with 2nd generation Intel Xeon Scalable (Cascade Lake) processors.
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Flexible
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Flexible
The amount of memory is configurable for all hardware models. Depending on the hardware model Dell EMC offers multiple choices on memory per Node, maxing at 3TB for E-, P-, S-, V-series and 2TB for G-Series. VxRail Appliances use 16GB RDIMMS, 32GB RDIMMS, 64GB LRDIMMS or 128GB LRDIMMS.
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Fixed: H610C
Flexible: H410C/H615C
NetApp HCI Compute nodes:
H410C (Small/Medium/Large): 384GB-1TB
H610C (Graphic): 512GB
H615C (Graphic): 384GB-1.5TB
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Flexible
Minimum hardware requirements need to be fulfilled.
For more information please go to: https://www.datacore.com/products/sansymphony/tech/compatibility/
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Flexible: number of disks (limited) + capacity
A 14th generation VxRail appliance has 24 disk slots.
E-Series supports 10x 2.5' SAS drives per node (up to 2 disk groups: 1x flash + 4x capacity drives each).
G-Series supports 6x 2.5' SAS drives per node (up to 1 disk group: 1x flash + 5x capacity drives each).
P-Series supports 24x 2.5' SAS drives per node (up to 4 disk groups: 1x flash + 5x capacity drives each).
V-Series supports 24x 2.5' SAS drives per node (up to 4 disk groups: 1x flash + 5x capacity drives each).
S-Series supports 12x 2.5' + 2x 3,5' SAS drives per node (up to 2 disk groups: 1x flash + 6 capacity drives each).
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Flexible (3 options)
NetApp HCI Storage nodes:
H410S (General Purpose): 6x 480GB/960GB/1.92TB NVMe
H610S (Capacity Optimized): 12x 960GB/1.92TB/3.84TB NVMe
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Flexible
Minimum hardware requirements need to be fulfilled.
For more information please go to: https://www.datacore.com/products/sansymphony/tech/compatibility/
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Flexible (1, 10 or 25 Gbps)
E-Series supports 2x 25 GbE (SFP28), 4x 10GbE (RJ45/SFP+) or 4x 1GbE (RJ45) per node.
G-Series supports 2x 25 GbE (SFP28) or 2x 10GbE (RJ45/SFP+) per node.
P-Series supports 2x 25 GbE (SFP28), 4x 10GbE (RJ45/SFP+) or 4x 1GbE (RJ45) per node.
S-Series supports 2x 25 GbE (SFP28), 4x 10GbE (RJ45/SFP+) or 4x 1GbE (RJ45) per node.
V-Series supports 2x 25 GbE (SFP28), 4x 10GbE (RJ45/SFP+) per node.
1GbE configurations are only supported with 1-CPU configurations.
Dell EMC VxRail 4.7.300 provides more network design flexibility in creating VxRail clusters across multiple racks. It also provides the ability to expand a cluster beyond one rack using L3 networks and L2 networks.
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Fixed (10 or 25Gbps)
NetApp HCI compute nodes come in various network configurations: H410C nodes use two RJ45 interfaces (1/10GbE) for management, two SFP+/SFP28 (10/25GbE) interfaces for storage, and two SFP+/SFP28 interfaces for vMotion and virtual machines; alternatively, all network functions can be converged onto two SFP+/SFP28 interfaces. H610C and H615C compute nodes come with two SFP+/SFP28 interfaces that are used for all traffic classes in NetApp HCI. All compute nodes support an additional RJ45 interface for out-band management.
NetApp HCI storage nodes (H410S, H610S) come with two RJ45 interfaces (1/10GbE) for management and two SFP+/SFP28 (10/25GbE) interfaces for storage.
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NVIDIA Tesla
AMD FirePro
Intel Iris Pro
DataCore SANsymphony supports the hardware that is on the hypervisor HCL.
VMware vSphere 6.5U1 officially supports several GPUs for VMware Horizon 7 environments:
NVIDIA Tesla M6 / M10 / M60
NVIDIA Tesla P4 / P6 / P40 / P100
AMD FirePro S7100X / S7150 / S7150X2
Intel Iris Pro Graphics P580
More information on GPU support can be found in the online VMware Compatibility Guide.
Windows 2016 supports two graphics virtualization technologies available with Hyper-V to leverage GPU hardware:
- Discrete Device Assignment
- RemoteFX vGPU
More information is provided here: https://docs.microsoft.com/en-us/windows-server/remote/remote-desktop-services/rds-graphics-virtualization
The NVIDIA website contains a listing of GRID certified servers and the maximum number of GPUs supported inside a single server.
Server hardware vendor websites also contain more detailed information on the GPU brands and models supported.
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NVIDIA Tesla
Dell EMC offers multiple GPU options in the VxRail V-series Appliances.
Currently the following GPUs are provided as add-on in PowerEdge Gen14 server hardware (V-model only):
NVIDIA Tesla M10 (up to 2x in each node)
NVIDIA Tesla M60 (up to 3x in each node)
NVDIA Tesla P40 (up to 3x in each node)
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H610C/H615C: NVIDIA Tesla
The following NVIDIA GPU card configurations can be ordered along with the H610C 2U compute model:
1x-2x NVIDIA Tesla M10 (VDI workloads)
The following NVIDIA GPU card configurations can be ordered along with the H615C 1U compute model:
1x-3x NVIDIA Tesla T4 (ML/AI workloads)
GPUs come factory integrated with the compute nodes, and cannot be added at a later point in time. However, NetApp HCI supports an open storage model in which it is possible to connect third-party servers with GPUs to the storage cluster in NetApp HCI.
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Scaling |
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CPU
Memory
Storage
GPU
The SANsymphony platform allows for expanding of all server hardware resources.
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Memory
Storage
Network
GPU
At the moment CPUs are not upgradeable in VxRail.
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N/A
Because of the fixed hardware composition of the compute and storage nodes and taking into account the small form factor, none of the allocated hardware resources (CPU, Memory, Network, Storage) can be expanded.
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Storage+Compute
Compute-only
Storage-only
Storage+Compute: In a single-layer deployment existing SANsymphony clusters can be expanded by adding additional nodes running SANsymphony, which adds additional compute and storage resources to the shared pool. In a dual-layer deployment both the storage-only SANsymphony clusters and the compute clusters can be expanded simultaneously.
Compute-only: Because SANsymphony leverages virtual block volumes (LUNs), storage can be presented to hypervisor hosts not participating in the SANsymphony cluster. This is also beneficial to migrations, since it allows for online storage vMotions between SANsymphony and non-SANsymphony storage platforms.
Storage-only: In a dual-layer or mixed deployment both the storage-only SANsymphony clusters and the compute clusters can be expanded independent from each other.
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Compute+storage
Storage+Compute: Existing VxRail clusters can be expanded by adding additional VxRail nodes, which adds additional compute and storage resources to the shared pool.
Compute-only: VMware does not allow non-VxRail hosts to become part of a VxRail cluster. This means that installing and enabling the vSAN VMkernel on hosts in a VxRail cluster that is not contributing storage, so vSAN datastores can be presented to these hypervisor hosts as well, is not an option at this time.
Storage-only: N/A; A VxRail node always takes active part in the hypervisor (compute) cluster as well as the storage cluster.
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Storage+Compute
Compute-only
Storage-only
NetApp HCIs hardware architecture fully separates compute from storage. This effectively means the platform has the capability to scale compute and storage as needed.
Storage+Compute: Existing NetApp HCI clusters can be expanded by adding additional Compute and Storage nodes, which adds additional compute and storage resources to the shared pool.
Compute-only: Existing NetApp HCI clusters can be expanded by adding additional Compute nodes, which adds additional CPU and Memory resources for VMs to the shared pool.
Storage-only: Existing NetApp HCI clusters can be expanded by adding additional Storage nodes, which adds additional storage performance and capacity resources to the shared pool.
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1-64 nodes in 1-node increments
There is a maximum of 64 nodes within a single cluster. Multiple clusters can be managed through a single SANsymphony management instance.
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3-64 storage nodes in 1-node increments
At minimum a VxRail deployment consists of 3 nodes. From there the solution can be scaled one or more nodes at a time. The first 4 cluster nodes must be identical.
Scaling beyond 32 nodes no longer requires a Request for Product Qualification (RPQ). However, an RPQ is required for Stretched Cluster implementations
If using 1GbE only, a storage cluster cannot expand beyond 8 nodes.
For the maximum node configuration hypervisor cluster scale-out limits still apply: 64 hosts for VMware vSphere.
VxRail 4.7 introduces support for adding multiple nodes in parallel, speeding up cluster expansions.
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2-64 compute nodes and 2-40 storage nodes in 1-node increments
Compute nodes: The hypervisor cluster scale-out limits still apply eg. 64 hosts for VMware vSphere in a single cluster.
Storage nodes: For specific use-cases a Request for Product Qualification (RPQ) process can be initiated to authorize more than 40 storage nodes within a single cluster.
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Small-scale (ROBO)
Details
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2 Node minimum
DataCore prevents split-brain scenarios by always having an active-active configuration of SANsymphony with a primary and an alternate path.
In the case SANsymphony servers are fully operating but do not see each other, the application host will still be able to read and write data via the primary path (no switch to secondary). The mirroring is interrupted because of the lost connection and the administrator is informed accordingly. All writes are stored on the locally available storage (primary path) and all changes are tracked. As soon as the connection between the SANsymphony servers is restored, the mirror will recover automatically based on these tracked changes.
Dual updates due to misconfiguration are detected automatically and data corruption is prevented by freezing the vDisk and waiting for user input to solve the conflict. Conflict solutions could be to declare one side of the mirror to be the new active data set and discarding all tracked changes at the other side, or splitting the mirror and merge the two data sets into a 3rd vDisk manually.
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2 Node minimum
VxRail 4.7.100 introduced support for 2-node clusters:
- The deployment is limited to VxRail Series E-Series nodes.
- Only 1GbE and 10GbE are supported. Inter-cluster VxRail traffic utilizes a pair of network cables linke between the physical nodes.
- A customer-supplied external vCenter is required that does not reside on the 2-node cluster.
- A Witness VM that monitors the health of the 2-node cluster is required and does not reside on the 2-node cluster.
2-node clusters are not supported when using the VxRail G410 appliance.
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4 Node minimum (2 storage + 2 compute)
Minimum configuration is 1 chassis with 4 nodes, consisting of 2 storage nodes and 2 compute nodes.
When leveraging a 2-node or 3-node storage cluster, 2 NetApp Witness nodes are deployed as virtual machines for arbitration purposes.
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Storage Support
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General |
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Block Storage Pool
SANsymphony only serves block devices to the supported OS platforms.
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Object Storage File System (OSFS)
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Block Pool
Element OS aggregates all storage resources into a single pool of storage from which block storage volumes can be provisioned.
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Partial
DataCores core approach is to provide storage resources to the applications without having to worry about data locality. But if data locality is explicitly requested, the solution can partially be designed that way by configuring the first instance of all data to be stored on locally available storage (primary path) and the mirrored instance to be stored on the alternate path (secondary path). Furthermore every hypervisor host can have a local preferred path, indicated by the ALUA path preference.
By default data does not automatically follow the VM when the VM is moved to another node. However, virtual disks can be relocated on the fly to other DataCore node without losing I/O access, but this relocation takes some time due to data copy operations required. This kind of relocation usually is done manually, but we allow automation of such tasks and can integrate with VM orchestration using PowerShell for example.
Whether data locality is a good or a bad thing has turned into a philosophical debate. Its true that data locality can prevent a lot of network traffic between nodes, because the data is physically located at the same node where the VM resides. However, in dynamic environments where VMs move to different hosts on a frequent basis, data locality in most cases requires a lot of data to be copied between nodes in order to maintain the physical VM-data relationship. The SDS/HCI vendors today that choose not to use data locality, advocate that the additional network latency is negligible.
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Partial
Each node within a VxRail appliance has a local memory read cache that is 0.4% of the hosts memory, up to 1GB. The read cache optimizes VDI I/O flows for example. Apart from the read-cache VxRail only uses data locality in stretched clusters to avoid high latency.
Whether data locality is a good or a bad thing has turned into a philosophical debate. Its true that data locality can prevent a lot of network traffic between nodes, because the data is physically located at the same node where the VM resides. However, in dynamic environments where VMs move to different hosts on a frequent basis, data locality in most cases requires a lot of data to be copied between nodes in order to maintain the physical VM-data relationship. The SDS/HCI vendors today that choose not to use data locality, advocate that the additional network latency is negligible.
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None
NetApp HCI is based on a shared nothing storage architecture. NetApp HCI enables every drive in every storage node throughout the cluster to contribute to the storage performance and capacity of every volume presented by the Element software storage layer. When a VM is moved to another compute node, data remains in place and does not follow the VM because data is stored and available across all nodes residing in the cluster.
Whether data locality is a good or a bad thing has turned into a philosophical debate. Its true that data locality can prevent a lot of network traffic between nodes, because the data is physically located at the same node where the VM resides. However, in dynamic environments where VMs move to different hosts on a frequent basis, data locality in most cases require a lot of data to be copied between nodes in order to maintain the physical VM-data relationship. The SDS/HCI vendors today that choose not to use data locality, advocate that the additional network latency is negligible.
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Direct-attached (Raw)
Direct-attached (VoV)
SAN or NAS
VoV = Volume-on-Volume; The Virtual Storage Controller uses virtual disks provided by the hypervisor platform.
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Direct-attached (Raw)
Remote vSAN datatstores (HCI Mesh)
NEW
The software takes ownership of the unformatted physical disks available inside the host.
VMware vSAN 7.0 U1 introduces the HCI Mesh concept. With VMware HCI Mesh a vSAN cluster can leverage the storage of remote vSAN clusters for hosting VMs without sacrificing important features such as HA and DR. Up to 5 remote vSAN datastores can be mounted by a single vSAN cluster. HCI Mesh works by using the existing vSAN VMkernel ports and transport protocols. It is full software-based and does not require any specialized hardware.
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Direct-Attached (Raw)
Direct-attached SSD (NVMe & SATA): The Element software takes ownership of the unformatted physical disks and creates a pool of block storage that is offered to clients via iSCSI.
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Magnetic-only
All-Flash
3D XPoint
Hybrid (3D Xpoint and/or Flash and/or Magnetic)
NEW
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Hybrid (Flash+Magnetic)
All-Flash
Hybrid hosts cannot be mixed with All-Flash hosts in the same VxRail cluster.
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All-Flash (SSD-only)
NetApp has exclusively released all-flash models for the NetApp HCI platform. These models facilitate a variety of workloads including those that demand ultra-high performance.
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Hypervisor OS Layer
Details
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SD, USB, DOM, SSD/HDD
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SSD
Each VxRail Gen14 node contains 2x 240GB SATA M.2 SSDs with RAID1 protection to host the VMware vSphere hypervisor software.
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SSD
Compute Node: 2x 240GB M.2 6Gb/s SATA MLC SSDs are used for system boot. VMware ESXi boots from these drives.
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Memory |
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DRAM
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DRAM
Each node within a VxRail appliance has a local memory read cache that is 0.4% of the hosts memory, up to 1GB. The read cache optimizes VDI I/O flows for example.
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NVRAM (PCIe card) or NVDIMM
DRAM
PCIe card-based NVRAM is utilized in H410S storage nodes.
NVDIMM is utilized in H610S storage nodes.
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Read/Write Cache
DataCore SANsymphony accelerates reads and writes by leveraging the powerful processors and large DRAM memory inside current generation x86-64bit servers on which it runs. Up to 8 Terabytes of cache memory may be configured on each DataCore node, enabling it to perform at solid state disk speeds without the expense. SANsymphony uses a common cache pool to store reads and writes in.
SANsymphony read caching essentially recognizes I/O patterns to anticipate which blocks to read next into RAM from the physical back-end disks. That way the next request can be served from memory.
When hosts write to a virtual disk, the data first goes into DRAM memory and is later destaged to disk, often grouped with other writes to minimize delays when storing the data to the persistent disk layer. Written data stays in cache for re-reads.
The cache is cleaned on a first-in-first-out (FiFo) basis. Segment overwrites are performed on the oldest data first for both read- and write cache segment requests.
SANsymphony prevents the write cache data from flooding the entire cache. In case the write data amount runs above a certain percentage watermark of the entire cache amount, then the write cache will temporarily be switched to write-through mode in order to regain balance. This is performed fully automatically and is self-adjusting, per virtual disk as well as on a global level.
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Read Cache
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NVRAM/NVDIMM: Write Buffer
DRAM: Metadata
PCIe card-based NVRAM is utilized in H410S storage nodes.
NVDIMM is utilized in H610S storage nodes.
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Up to 8 TB
The actual size that can be configured depends on the server hardware that is used.
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Non-configurable
Each node within a VxRail appliance has a local memory read cache that is 0.4% of the hosts memory, up to 1GB. The read cache optimizes VDI I/O flows for example.
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NVRAM/NVDIMM: Non-configurable
DRAM: Unknown
NVRAM (PCIe): 8GB for H410S storage nodes.
NVDIMM: 32GB for H610S storage nodes.
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Flash |
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SSD, PCIe, UltraDIMM, NVMe
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SSD; NVMe
VxRail Appliances support a variety of SSDs.
Cache SSDs (SAS): 400GB, 800GB, 1.6TB
Cache SSDs (NVMe): 800GB, 1.6TB
Capacity SSDs (SAS/SATA): 1.92TB, 3.84TB, 7.68TB
Capacity SSDs (NVMe): 960GB, 1TB, 3.84TB, 4TB
VxRail does not support mixing SAS/SATA SSDs in the same disk group.
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SSD, NVMe
The Element software uses a log-structured approach in writing to disk. This optimizes utilization and performance of SSDs, significantly improves the lifespan of SSDs, and, most importantly, enables the use of less expensive consumer-grade MLC SSDs.
The H610S Storage Node introduces support for NVMe U.2 SSDs.
MLC = Multi-Level Cell
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Persistent Storage
SANsymphony supports new TRIM / UNMAP capabilities for solid-state drives (SSD) in order to reduce wear on those devices and optimize performance.
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Hybrid: Read/Write Cache
All-Flash: Write Cache + Storage Tier
In all VxRail configurations 1 separate SSD per disk group is used for caching purposes. The other disks in the disk group are used for persistent storage of data.
For All-flash configurations, the flash device(s) in the cache tier are used for write caching only (no read cache) as read performance from the capacity flash devices is more than sufficient.
Two different grades of flash devices are used in an All-flash VxRail configuration: Lower capacity, higher endurance devices for the cache layer and more cost effective, higher capacity, lower endurance devices for the capacity layer. Writes are performed at the cache layer and then de-staged to the capacity layer, only as needed.
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All-Flash: Metadata + Persistent Storage Tier
Write buffer is provided by the PCIe card (NVRAM).
Read cache is not necessary in All-flash configurations.
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No limit, up to 1 PB per device
The definition of a device here is a raw flash device that is presented to SANsymphony as either a SCSI LUN or a SCSI disk.
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Hybrid: 4 Flash devices per node
All-Flash: 2-24 Flash devices per node
Each VxRail node always requires 1 high-performance SSD for write caching.
In Hybrid VxRail configurations the high-performance SSD in a disk group is also used for read caching. Per disk group 3-5 HDDs can be used as persistent storage (capacity drives).
In All-Flash VxRail configurations the high-performance SSD in a disk group is only used for write caching. Per node 1-5 SSDs can be used for read caching and persistent storage (capacity drives).
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All-Flash: 6 SSDs/12 NVMe per storage node
All-Flash SSD configurations:
H410S (General Purpose): 6x 480GB/960GB/1.92TB SSD
H610S (Capacity Optimized): 12x 960GB/1.92TB/3.84TB NVMe
With H410S/H610S nodes there is a choice between Encrypting and Non-Encrypting drives.
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Magnetic |
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SAS or SATA
SAS = 10k or 15k RPM = Medium-capacity medium-speed drives
SATA = NL-SAS = 7.2k RPM = High-capacity low-speed drives
In this case SATA = NL-SAS = MDL SAS
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Hybrid: SAS or SATA
VxRail Appliances support a variety of HDDs.
SAS 10K: 1.2TB, 1.8TB, 2.4TB
SATA 7.2K: 2.0TB, 4.0TB
VMware vSAN supports the use of 512e drives. 512e magnetic hard disk drives (HDDs) use a physical sector size of 4096 bytes, but the logical sector size emulates a sector size of 512 bytes. Larger sectors enable the integration of stronger error correction algorithms to maintain data integrity at higher storage densities.
VMware vSAN 6.7 introduces support for 4K native (4Kn) mode.
SAS = 10k or 15k RPM = Medium-capacity medium-speed drives
SATA = NL-SAS = 7.2k RPM = High-capacity low-speed drives
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N/A
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Persistent Storage
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Persistent Storage
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N/A
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Magnetic Capacity
Details
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No limit, up to 1 PB (per device)
The definition of a device here is a raw flash device that is presented to SANsymphony as either a SCSI LUN or a SCSI disk.
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3-5 SAS/SATA HDDs per disk group
In the current configurations there is a choice between 1.2/1.8/2.4TB 10k SAS drives and 2.0/4.0TB 7.2k NL-SAS drives.
The current configuration maximum for a single host/node is 4 disk groups consisting of 1 NVMe drive + 5 HDDs for hybrid configurations or 1 NVMe drive + 5 capacity SSDs for all-flash configurations = total of 24 drives per host/node.
Since a single VxRail G-Series chassis can contain up to 4 nodes, theres a total of 6 drives per node.
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N/A
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Data Availability
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Reads/Writes |
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Persistent Write Buffer
Details
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DRAM (mirrored)
If caching is turned on (default=on), any write will only be acknowledged back to the host after it has been succesfully stored in DRAM memory of two separate physical SANsymphony nodes. Based on de-staging algorithms each of the nodes eventually copies the written data that is kept in DRAM to the persistent disk layer. Because DRAM outperforms both flash and spinning disks the applications experience much faster write behavior.
Per default, the limit of dirty-write-data allowed per Virtual Disk is 128MB. This limit could be adjusted, but there has never been a reason to do so in the real world. Individual Virtual Disks can be configured to act in write-through mode, which means that the dirty-write-data limit is set to 0MB so effectively the data is directly written to the persistent disk layer.
DataCore recommends that all servers running SANsymphony software are UPS protected to avoid data loss through unplanned power outages. Whenever a power loss is detected, the UPS automatically signals this to the SANsymphony node and write behavior is switched from write-back to write-through mode for all Virtual Disks. As soon as the UPS signals that power has been restored, the write behavior is switched to write-back again.
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Flash Layer (SSD, NVMe)
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NVRAM (mirrored)
NVRAM serves as a very performant storage medium for a read/write mirrored journal that is split between two NetApp HCI storage nodes.
When an application sends a write request, it is mirrored between the NVRAM on two NetApp HCI storage nodes for high availability and redundancy. Once both copies are stored, the primary node acknowledges the write completion to the host. Once the write is acknowledged, the system will copy the data from NVRAM to the persistent storage layer (SSD).
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Disk Failure Protection
Details
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2-way and 3-way Mirroring (RAID-1) + opt. Hardware RAID
DataCore SANsymphony software primarily uses mirroring techniques (RAID-1) to protect data within the cluster. This effectively means the SANsymphony storage platform can withstand a failure of any two disks or any two nodes within the storage cluster. Optionally, hardware RAID can be implemented to enhance the robustness of individual nodes.
SANsymphony supports Dynamic Data Resilience. Data redundancy (none, 2-way or 3-way) can be added or removed on-the-fly at the vdisk level.
A 2-way mirror acts as active-active, where both copies are accessible to the host and written to. Updating of the mirror is synchronous and bi-directional.
A 3-way mirror acts as active-active-backup, where the active copies are accessible to the host and written to, and the backup copy is inaccessible to the host (paths not presented) and written to. Updating of the mirrors active copies is synchronous and bi-directional. Updating of the mirrors backup copy is synchronous and unidirectional (receive only).
In a 3-way mirror the backup copy should be independent of existing storage resources that are used for the active copies. Because of the synchronous updating all mirror copies should be equal in storage performance.
When in a 3-way mirror an active copy fails, the backup copy is promoted to active state. When the failed mirror copy is repaired, it automatically assumes a backup state. Roles can be changed manually on-the-fly by the end-user.
DataCore SANsymphony 10.0 PSP9 U1 introduced System Managed Mirroring (SMM). A multi-copy virtual disk is created from a storage source (disk pool or pass-through disk) from two or three DataCore Servers in the same server group. Data is synchronously mirrored between the servers to maintain redundancy and high availability of the data. System Managed Mirroring (SMM) addresses the complexity of managing multiple mirror paths for numerous virtual disks. This feature also addresses the 256 LUN limitation by allowing thousands of LUNs to be handled per network adapter. The software transports data in a round robin mode through available mirror ports to maximize throughput and can dynamically reroute mirror traffic in the event of lost ports or lost connections. Mirror paths are automatically and silently managed by the software.
The System Managed Mirroring (SMM) feature is disabled by default. This feature may be enabled or disabled for the server group.
With SANsymphony 10.0 PSP10 adds seamless transition when converting Mirrored Virtual Disks (MVD) to System Managed Mirroring (SMM). Seamless transition converts and replaces mirror paths on virtual disks in a manner in which there are no momentary breaks in mirror paths.
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Hybrid/All-Flash: 0-3 Replicas (RAID1; 1N-4N)
All-Flash: Erasure Coding (RAID5-6)
VMwares implementation of Erasure Coding only applies to All-Flash configurations and is similar to RAID-5 and RAID-6 protection. RAID-5 requires a minimum of 4 nodes (3+1) and protects against a single node failure; RAID-6 requires a minimum of 6 nodes and protects against two node failures. Erasure Coding is only available in vSAN Enterprise and Advanced editions, and is only configurable for All-flash configurations.
VMwares implementation of replicas is called NumberOfFailuresToTolerate (0, 1, 2 or 3). It applies to both disk and node failures. Optionally, nodes can be assigned to a logical grouping called Failure Domains. The use of 0 Replicas within a single site is only available when using Stretched Clustering, which is only available in the Enterprise editions.
Replicas: Before any write is acknowledged to the host, it is synchronously replicated on an adjacent node. All nodes in the cluster participate in replication. This means that with 2N one instance of data that is written is stored on one node and another instance of that data is stored on a different node in the cluster. For both instances this happens in a fully distributed manner, in other words, there is no dedicated partner node. When an entire node fails, VMs need to be restarted and data is read from the surviving instances on other nodes within the vSAN cluster instead. At the same time data re-replication of the associated replicas needs to occur in order to restore the desired NumberOfFailuresToTolerate.
Failure Domains: When using Failure Domains, one instance of the data is kept within the local Failure Domain and another instance of the data is kept within another Failure Domain. By applying Failure Domains, rack failure protection can be achieved as well as site failure protection in stretched configuration.
vSAN provides increased support for locator LEDs on vSAN disks. Gen-9 HPE controllers in pass-through mode support vSAN activation of locator LEDs. Blinking LEDs help to identify and isolate specific drives.
vSAN 6.7 introduces the Host Pinning storage policy that can be used for next-generation, shared-nothing applications. When using Host Pinning, vSAN maintains a single copy of the data and stores the data blocks local to the ESXi host running the VM. This policy is offered as a deployment choice for Big Data (Hadoop, Spark), NoSQL, and other such applications that maintain data redundancy at the application layer. vSAN Host Pinning has specific requirements and guidelines that require VMware validation to ensure proper deployment.
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1 Replica (2N)
NEW
NetApp HCI Double Helix data protection is a RAID-less data protection solution designed to maintain both data availability and performance regardless of failure condition. Helix data protection is a distributed replication algorithm that spreads at least two redundant copies of data across all drives in the system. This approach allows the system to absorb multiple failures across all levels of the storage solution while maintaining data redundancy and QoS settings.
If a drive should go down, NetApp HCI automatically rebuilds redundant data across all remaining drives in the cluster in minutes to maintain high availability with minimal impact to performance due to the platforms architecture. The more nodes in the cluster, the faster the activity occurs and the lower the overall impact. No matter where the failure occurs (drive, node, backplane, network or software failure), the recovery process is the same.
Element OS 12.2 introduces periodic health checks on SolidFire appliance drives using SMART health data from the drives. A drive that fails the SMART health check might be close to failure. If a drive fails the SMART health check, a new critical severity cluster fault appears.
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Node Failure Protection
Details
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2-way and 3-way Mirroring (RAID-1)
DataCore SANsymphony software primarily uses mirroring techniques (RAID-1) to protect data within the cluster. This effectively means the SANsymphony storage platform can withstand a failure of any two disks or any two nodes within the storage cluster. Optionally, hardware RAID can be implemented to enhance the robustness of individual nodes.
SANsymphony supports Dynamic Data Resilience. Data redundancy (none, 2-way or 3-way) can be added or removed on-the-fly at the vdisk level.
A 2-way mirror acts as active-active, where both copies are accessible to the host and written to. Updating of the mirror is synchronous and bi-directional.
A 3-way mirror acts as active-active-backup, where the active copies are accessible to the host and written to, and the backup copy is inaccessible to the host (paths not presented) and written to. Updating of the mirrors active copies is synchronous and bi-directional. Updating of the mirrors backup copy is synchronous and unidirectional (receive only).
In a 3-way mirror the backup copy should be independent of existing storage resources that are used for the active copies. Because of the synchronous updating all mirror copies should be equal in storage performance.
When in a 3-way mirror an active copy fails, the backup copy is promoted to active state. When the failed mirror copy is repaired, it automatically assumes a backup state. Roles can be changed manually on-the-fly by the end-user.
DataCore SANsymphony 10.0 PSP9 U1 introduced System Managed Mirroring (SMM). A multi-copy virtual disk is created from a storage source (disk pool or pass-through disk) from two or three DataCore Servers in the same server group. Data is synchronously mirrored between the servers to maintain redundancy and high availability of the data. System Managed Mirroring (SMM) addresses the complexity of managing multiple mirror paths for numerous virtual disks. This feature also addresses the 256 LUN limitation by allowing thousands of LUNs to be handled per network adapter. The software transports data in a round robin mode through available mirror ports to maximize throughput and can dynamically reroute mirror traffic in the event of lost ports or lost connections. Mirror paths are automatically and silently managed by the software.
The System Managed Mirroring (SMM) feature is disabled by default. This feature may be enabled or disabled for the server group.
With SANsymphony 10.0 PSP10 adds seamless transition when converting Mirrored Virtual Disks (MVD) to System Managed Mirroring (SMM). Seamless transition converts and replaces mirror paths on virtual disks in a manner in which there are no momentary breaks in mirror paths.
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Hybrid/All-Flash: 0-3 Replicas (RAID1; 1N-4N)
All-Flash: Erasure Coding (RAID5-6)
VMwares implementation of Erasure Coding only applies to All-Flash configurations and is similar to RAID-5 and RAID-6 protection. RAID-5 requires a minimum of 4 nodes (3+1) and protects against a single node failure; RAID-6 requires a minimum of 6 nodes and protects against two node failures. Erasure Coding is only available in vSAN Enterprise and Advanced editions, and is only configurable for All-flash configurations.
VMwares implementation of replicas is called NumberOfFailuresToTolerate (0, 1, 2 or 3). It applies to both disk and node failures. Optionally, nodes can be assigned to a logical grouping called Failure Domains. The use of 0 Replicas within a single site is only available when using Stretched Clustering, which is only available in the Enterprise editions.
Replicas: Before any write is acknowledged to the host, it is synchronously replicated on an adjacent node. All nodes in the cluster participate in replication. This means that with 2N one instance of data that is written is stored on one node and another instance of that data is stored on a different node in the cluster. For both instances this happens in a fully distributed manner, in other words, there is no dedicated partner node. When an entire node fails, VMs need to be restarted and data is read from the surviving instances on other nodes within the vSAN cluster instead. At the same time data re-replication of the associated replicas needs to occur in order to restore the desired NumberOfFailuresToTolerate.
Failure Domains: When using Failure Domains, one instance of the data is kept within the local Failure Domain and another instance of the data is kept within another Failure Domain. By applying Failure Domains, rack failure protection can be achieved as well as site failure protection in stretched configuration.
vSAN provides increased support for locator LEDs on vSAN disks. Gen-9 HPE controllers in pass-through mode support vSAN activation of locator LEDs. Blinking LEDs help to identify and isolate specific drives.
vSAN 6.7 introduces the Host Pinning storage policy that can be used for next-generation, shared-nothing applications. When using Host Pinning, vSAN maintains a single copy of the data and stores the data blocks local to the ESXi host running the VM. This policy is offered as a deployment choice for Big Data (Hadoop, Spark), NoSQL, and other such applications that maintain data redundancy at the application layer. vSAN Host Pinning has specific requirements and guidelines that require VMware validation to ensure proper deployment.
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1 Replica (2N)
NetApp HCI Double Helix data protection is a RAID-less data protection solution designed to maintain both data availability and performance regardless of failure condition. Helix data protection is a distributed replication algorithm that spreads at least two redundant copies of data across all drives in the system. This approach allows the system to absorb multiple failures across all levels of the storage solution while ma
If a storage node should go down, NetApp HCI automatically rebuilds redundant data across all remaining nodes in minutes to maintain high availability with minimal impact to performance due to the platforms architecture. The more nodes in the cluster, the faster the activity occurs and the lower the overall impact. No matter where the failure occurs (drive, node, backplane, network or software failure), the recovery process is the same.
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Block Failure Protection
Details
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Not relevant (usually 1-node appliances)
Manual configuration (optional)
Manual designation per Virtual Disk is required to accomplish this. The end-user is able to define which node is paired to which node for that particular Virtual Disk. However, block failure protection is in most cases irrelevant as 1-node appliances are used as building blocks.
SANsymphony works on an N+1 redundancy design allowing any node to acquire any other node as a redundancy peer per virtual device. Peers are replacable/interchangable on a per Virtual Disk level.
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Failure Domains
Block failure protection can be achieved by assigning nodes in the same appliance to different Failure Domains.
Failure Domains: When using Failure Domains, one instance of the data is kept within the local Failure Domain and another instance of the data is kept within another Failure Domain. By applying Failure Domains, rack failure protection can be achieved as well as site failure protection in stretched configurations.
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Protection Domains
Block failure protection can be achieved by assigning chassis to different Protection Domains (aka Zones).
Protection Domains: Protection domains at the chassis level allow scaling of NetApp HCI clusters in such a way that
the failure of an entire chassis can be sustained even if there is more than one storage node in the chassis. The minimum allowed configuration is 3 chassis with 2 storage nodes each. The system automatically lays out data correctly when the configuration is compatible with Protection domains.
Beginning with Element OS 12.0, protection domain layouts can be customized to cover zones of storage nodes within a rack, or between multiple racks. This enables more flexibility in data resiliency and improves storage availability, especially in large scale installations.
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Rack Failure Protection
Details
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Manual configuration
Manual designation per Virtual Disk is required to accomplish this. The end-user is able to define which node is paired to which node for that particular Virtual Disk.
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Failure Domains
Rack failure protection can be achieved by assigning nodes within the same rack to different Failure Domains.
Failure Domains: When using Failure Domains, one instance of the data is kept within the local Failure Domain and another instance of the data is kept within another Failure Domain. By applying Failure Domains, rack failure protection can be achieved as well as site failure protection in stretched configurations.
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Protection Domains
Rack failure protection can be achieved by assigning chassis to different Protection Domains (aka Zones).
Protection Domains: Protection domains at the chassis level allow scaling of NetApp HCI clusters in such a way that
the failure of an entire chassis can be sustained even if there is more than one storage node in the chassis. The minimum allowed configuration is 3 chassis with 2 storage nodes each. The system automatically lays out data correctly when the configuration is compatible with Protection domains.
Beginning with Element OS 12.0, protection domain layouts can be customized to cover zones of storage nodes within a rack, or between multiple racks. This enables more flexibility in data resiliency and improves storage availability, especially in large scale installations.
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Protection Capacity Overhead
Details
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Mirroring (2N) (primary): 100%
Mirroring (3N) (primary): 200%
+ Hardware RAID5/6 overhead (optional)
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Replicas (2N): 100%
Replicas (3N): 200%
Erasure Coding (RAID5): 33%
Erasure Coding (RAID6): 50%
RAID5: The stripe size used by vSAN for RAID5 is 3+1 (33% capacity overhead for data protection) and is independent of the cluster size. The minimum cluster size for RAID5 is 4 nodes.
RAID6: The stripe size used by vSAN for RAID6 is 4+2 (50% capacity overhead for data protection) and is independent of the cluster size. The minimum cluster size for RAID6 is 6 nodes.
RAID5/6 can only be leveraged in vSAN All-flash configurations because of I/O amplification.
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Replica (2N): 100%
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Data Corruption Detection
Details
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N/A (hardware dependent)
SANsymphony fully relies on the hardware layer to protect data integrity. This means that the SANsymphony software itself does not perform Read integrity checks and/or Disk scrubbing to verify and maintain data integrity.
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Read integrity checks
Disk scrubbing (software)
End-to-end checksum provides automatic detection and resolution of silent disk errors. Creation of checksums is enabled by default, but can be disabled through policy on a per VM (or virtual disk) basis if desired. In case of checksum verification failures data is fetched from another copy.
The disk scrubbing process runs in the background.
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Read integrity checks
During writing of the data checksums are created and stored. When read again or accessed during system operations, the checksum is validated. If an issue is detected, the system automatically accesses the secondary copy and repairs the invalid copy.
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Points-in-Time |
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Built-in (native)
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Built-in (native)
VMware vSAN uses the 'vSANSparse' snapshot format that leverages VirstoFS technology as well as in-memory metadata cache for lookups. vSANSparse offers greatly improved performance when compared to previous virtual machine snapshot implementations.
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Built-in (native)
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Local + Remote
SANsymphony snapshots are always created on one side only. However, SANsymphony allows you to create a snapshot for the data on each side by configuring two snapshot schedules, one for the local volume and one for the remote volume. Both snapshot entities are independent and can be deleted independently allowing different retention times if needed.
There is also the capability to pair the snapshot feature along with asynchronous replication which provides you with the ability to have a third site long distance remote copy in place with its own retention time.
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Local
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Local + Remote
NetApp HCI snapshots can be created and then replicated in real-time to a remote NetApp HCI cluster over an IP network when paired.
Up to 32 local Snapshot copies can be created for every individual volume.
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Snapshot Frequency
Details
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1 Minute
The snapshot lifecycle can be automatically configured using the integrated Automation Scheduler.
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GUI: 1 hour
vSAN snapshots are invoked using the existing snapshot options in the VMware vSphere GUI.
To create a snapshot schedule using the Dell EMCnter (Web) Client: Click on a VM, then inside the Monitoring tab select Tasks & Events, Scheduled Tasks, 'Take Snapshots…'.
A single snapshot schedule allows a minimum frequency of 1 hour. Manual snapshots can be taken at any time.
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5 minutes
If a Netapp HCI snapshot is scheduled to run at a time period that is not divisible by 5 minutes, the snapshot will run at the next time period that is divisible by 5 minutes. You cannot schedule a snapshot to run at intervals of less than 5 minutes.
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Snapshot Granularity
Details
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Per VM (Vvols) or Volume
With SANsymphony the rough hierarchy is: physical disk(s) or LUNs -> Disk Pool -> Virtual Disk (=logical volume).
Although DataCore SANsymphony uses block-storage, the platform is capable of attaining per VM-granularity if desired.
In Microsoft Hyper-V environments, when a VM with vdisks is created through SCVMM, DataCore can be instructed to automatically carve out a Virtual Disk (=storage volume) for every individual vdisk. This way there is a 1-to-1 alignment from end-to-end and snapshots can be created on the VM-level. The per-VM functionality is realized by installing the DataCore Storage Management Provider in SCVMM.
Because of the per-host storage limitations in VMware vSphere environments, VVols is leveraged to provide per VM-granularity. DataCore SANsymphony Provider v2.01 is certified for VMware ESXi 6.5 U2/U3, ESXi 6.7 GA/U1/U2/U3 and ESXi 7.0 GA/U1.
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Per VM
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Per VM (Vvols) or Volume
Although NetApp HCI uses block-storage, the platform is capable of attaining per VM-granularity by leveraging VMware Virtual Volumes (Vvols).
NetApp HCI has VVols certification for VMware ESXi 6.5 U1 up to ESXi 7.0U1. NetApp VASA provider for SolidFire Element OS 2.10.1 is compatible with NetApp HCIs H410S and H610S storage nodes.
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Built-in (native)
DataCore SANsymphony incorporates Continuous Data Protection (CDP) and leverages this as an advanced backup mechanism. As the term implies, CDP continuously logs and timestamps I/Os to designated virtual disks, allowing end-users to restore the environment to an arbitrary point-in-time within that log.
Similar to snapshot requests, one can generate a CDP Rollback Marker by scripting a call to a PowerShell cmdlet when an application has been quiesced and the caches have been flushed to storage. Several of these markers may be present throughout the 14-day rolling log. When rolling back a virtual disk image, one simply selects an application-consistent or crash-consistent restore point from just before the incident occurred.
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External (vSAN Certified)
VMware vSAN does not provide any backup/restore capabilities of its own. Therefore it relies on existing data protection solutions like Dell EMC Avamar Virtual Edition (AVE) backup software or any other vSphere compatible 3rd party backup application. AVE is not part of the licenses bundled with VxRail and thus needs to be purchased separately. AVE requires the deployment of virtual backup appliances on top of vSphere.
No specific integration exists between VMware vSAN and Dell EMC AVE.
VMwares free-of-charge backup software that comes with any vSphere license, VMware vSphere Data Protection (VDP), has been declared End-of-Availability and is not supported for VMware vSphere 6.7 and up.
VMware is working on native vSAN data protection, which is currently still in beta and was expected to go live in the first half of 2019. vSAN 7.0 also did not introduce native data protection.
The following 3rd party Data Protection partner products are certified with vSAN 6.7:
- Cohesity DataProtect 6.1
- CommVault 11
- Dell EMC Avamar 18.1
- Dell EMC NetWorker 18.1
- Hitachi Data Instance Director 6.7
- Rubrik Cloud Data Management 4.2
- Veeam Backup&Replication 9.5 U4a
- Veritas NetBackup 8.1.2
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Built-in (native)
With regard to NetApp HCI volume back-ups can be created in two data formats:
- Native: a compressed format readable only by NetApp HCI storage systems.
- Uncompressed: an uncompressed format compatible with other systems.
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Local or Remote
All available storage within the SANsymphony group can be configured as targets for back-up jobs.
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N/A
VMware vSAN does not provide any backup/restore capabilities of its own. Therefore it relies on existing data protection solutions like Dell EMC Avamar Virtual Edition (AVE) backup software or any other vSphere compatible 3rd party backup application. AVE is not part of the licenses bundled with VxRail and thus needs to be purchased separately. AVE requires the deployment of virtual backup appliances on top of vSphere.
No specific integration exists between VMware vSAN and Dell EMC AVE.
VMwares free-of-charge backup software that comes with any vSphere license, VMware vSphere Data Protection (VDP), has been declared End-of-Availability and is not supported for VMware vSphere 6.7 and up.
VMware is working on native vSAN data protection, which is currently still in beta and expected to go live in the first half of 2019.
The following 3rd party Data Protection partner products are certified with vSAN 6.7:
- Cohesity DataProtect 6.1
- CommVault 11
- Dell EMC Avamar 18.1
- Dell EMC NetWorker 18.1
- Hitachi Data Instance Director 6.7
- Rubrik Cloud Data Management 4.2
- Veeam Backup&Replication 9.5 U4a
- Veritas NetBackup 8.1.2
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Locally
To remote sites
To remote cloud object stores (Amazon S3, OpenStack Swift)
Volumes can be back-ed up and restored to other NetApp HCI clusters, as well as secondary object stores that are compatible with Amazon S3 or OpenStack Swift.
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Continuously
As Continuous Data Protection (CDP) is being leveraged, I/Os are logged and timestamped in a continous fashion, so end-users can restore to virtually any-point-in-time.
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N/A
VMware vSAN does not provide any backup/restore capabilities of its own. Therefore it relies on existing data protection solutions like Dell EMC Avamar Virtual Edition (AVE) backup software or any other vSphere compatible 3rd party backup application. AVE is not part of the licenses bundled with VxRail and thus needs to be purchased separately. AVE requires the deployment of virtual backup appliances on top of vSphere.
No specific integration exists between VMware vSAN and Dell EMC AVE.
VMwares free-of-charge backup software that comes with any vSphere license, VMware vSphere Data Protection (VDP), has been declared End-of-Availability and is not supported for VMware vSphere 6.7 and up.
VMware is working on native vSAN data protection, which is currently still in beta and expected to go live in the first half of 2019.
The following 3rd party Data Protection partner products are certified with vSAN 6.7:
- Cohesity DataProtect 6.1
- CommVault 11
- Dell EMC Avamar 18.1
- Dell EMC NetWorker 18.1
- Hitachi Data Instance Director 6.7
- Rubrik Cloud Data Management 4.2
- Veeam Backup&Replication 9.5 U4a
- Veritas NetBackup 8.1.2
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5 minutes
NetApp HCI backups are based on volume snapshots. If a Netapp HCI snapshot is scheduled to run at a time period that is not divisible by 5 minutes, the snapshot will run at the next time period that is divisible by 5 minutes. You cannot schedule a snapshot to run at intervals of less than 5 minutes.
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Backup Consistency
Details
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Crash Consistent
File System Consistent (Windows)
Application Consistent (MS Apps on Windows)
By default CDP creates crash consistent restore points. Similar to snapshot requests, one can generate a CDP Rollback Marker by scripting a call to a PowerShell cmdlet when an application has been quiesced and the caches have been flushed to storage.
Several CDP Rollback Markers may be present throughout the 14-day rolling log. When rolling back a virtual disk image, one simply selects an application-consistent, filesystem-consistent or crash-consistent restore point from (just) before the incident occurred.
In a VMware vSphere environment, the DataCore VMware vCenter plug-in can be used to create snapshot schedules for datastores and select the VMs that you want to enable VSS filesystem/application consistency for.
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N/A
VMware vSAN does not provide any backup/restore capabilities of its own. Therefore it relies on existing data protection solutions like Dell EMC Avamar Virtual Edition (AVE) backup software or any other vSphere compatible 3rd party backup application. AVE is not part of the licenses bundled with VxRail and thus needs to be purchased separately. AVE requires the deployment of virtual backup appliances on top of vSphere.
No specific integration exists between VMware vSAN and Dell EMC AVE.
VMwares free-of-charge backup software that comes with any vSphere license, VMware vSphere Data Protection (VDP), has been declared End-of-Availability and is not supported for VMware vSphere 6.7 and up.
VMware is working on native vSAN data protection, which is currently still in beta and expected to go live in the first half of 2019.
The following 3rd party Data Protection partner products are certified with vSAN 6.7:
- Cohesity DataProtect 6.1
- CommVault 11
- Dell EMC Avamar 18.1
- Dell EMC NetWorker 18.1
- Hitachi Data Instance Director 6.7
- Rubrik Cloud Data Management 4.2
- Veeam Backup&Replication 9.5 U4a
- Veritas NetBackup 8.1.2
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Crash Consistent
File System Consistent (Windows)
Application Consistent (MS Apps on Windows)
By default NetApp HCI creates crash consistent restore points.
The NetApp HCI VSS hardware provider integrates VSS shadow copies with NetApp HCI Snapshot copies and clones. The provider runs on Microsoft Windows 2008 R2 and 2012 R2 editions and supports shadow copies created using DiskShadow and other VSS requesters. A GUI-based configuration utility is provided to add, modify, and remove cluster information used by the NetApp HCI VSS hardware provider.
Utilizing VSS Snapshot capabilities with the NetApp HCI VSS hardware provider makes sure that Snapshot copies are application consistent with business applications that use NetApp HCI volumes on a system. A coordinated effort between VSS components provides this functionality.
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Restore Granularity
Details
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Entire VM or Volume
With SANsymphony the rough hierarchy is: physical disk(s) or LUNs -> Disk Pool -> Virtual Disk (=logical volume).
Although DataCore SANsymphony uses block-storage, the platform is capable of attaining per VM-granularity if desired.
In Microsoft Hyper-V environments, when a VM with vdisks is created through SCVMM, DataCore can be instructed to automatically carve out a Virtual Disk (=storage volume) for every individual vdisk. This way there is a 1-to-1 alignment from end-to-end and snapshots can be created on the VM-level. The per-VM functionality is realized by installing the DataCore Storage Management Provider in SCVMM.
Because of the per-host storage limitations in VMware vSphere environments, VVols is leveraged to provide per VM-granularity. DataCore SANsymphony Provider v2.01 is VMware certified for ESXi 6.5 U2/U3, ESXi 6.7 GA/U1/U2/U3 and ESXi 7.0 GA/U1.
When configuring the virtual environment as described above, effectively VM-restores are possible.
For file-level restores a Virtual Disk snapshot needs to be mounted so the file can be read from the mount. Many simultaneous rollback points for the same Virtual Disk can coexist at the same time, allowing end-users to compare data states. Mounting and changing rollback points does not alter the original Virtual Disk.
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N/A
VMware vSAN does not provide any backup/restore capabilities of its own. Therefore it relies on existing data protection solutions like Dell EMC Avamar Virtual Edition (AVE) backup software or any other vSphere compatible 3rd party backup application. AVE is not part of the licenses bundled with VxRail and thus needs to be purchased separately. AVE requires the deployment of virtual backup appliances on top of vSphere.
No specific integration exists between VMware vSAN and Dell EMC AVE.
VMwares free-of-charge backup software that comes with any vSphere license, VMware vSphere Data Protection (VDP), has been declared End-of-Availability and is not supported for VMware vSphere 6.7 and up.
VMware is working on native vSAN data protection, which is currently still in beta and expected to go live in the first half of 2019.
The following 3rd party Data Protection partner products are certified with vSAN 6.7:
- Cohesity DataProtect 6.1
- CommVault 11
- Dell EMC Avamar 18.1
- Dell EMC NetWorker 18.1
- Hitachi Data Instance Director 6.7
- Rubrik Cloud Data Management 4.2
- Veeam Backup&Replication 9.5 U4a
- Veritas NetBackup 8.1.2
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Entire Volume
Administrators are enabled to perform VM and single file restores by mounting a volume snapshot created by NetApp HCI.
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Restore Ease-of-use
Details
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Entire VM or Volume: GUI
Single File: Multi-step
Restoring VMs or single files from volume-based storage snapshots requires a multi-step approach.
For file-level restores a Virtual Disk snapshot needs to be mounted so the file can be read from the mount. Many simultaneous rollback points for the same Virtual Disk can coexist at the same time, allowing end-users to compare data states. Mounting and changing rollback points does not alter the original Virtual Disk.
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N/A
VMware vSAN does not provide any backup/restore capabilities of its own. Therefore it relies on existing data protection solutions like Dell EMC Avamar Virtual Edition (AVE) backup software or any other vSphere compatible 3rd party backup application. AVE is not part of the licenses bundled with VxRail and thus needs to be purchased separately. AVE requires the deployment of virtual backup appliances on top of vSphere.
No specific integration exists between VMware vSAN and Dell EMC AVE.
VMwares free-of-charge backup software that comes with any vSphere license, VMware vSphere Data Protection (VDP), has been declared End-of-Availability and is not supported for VMware vSphere 6.7 and up.
VMware is working on native vSAN data protection, which is currently still in beta and expected to go live in the first half of 2019.
The following 3rd party Data Protection partner products are certified with vSAN 6.7:
- Cohesity DataProtect 6.1
- CommVault 11
- Dell EMC Avamar 18.1
- Dell EMC NetWorker 18.1
- Hitachi Data Instance Director 6.7
- Rubrik Cloud Data Management 4.2
- Veeam Backup&Replication 9.5 U4a
- Veritas NetBackup 8.1.2
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Entire VM: Multi-step
Single File: Multi-step
Restoring a volume is a single action via API or GUI. However, restoring either VMs or single files from volume-based storage snapshots requires a multi-step approach.
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Disaster Recovery |
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Remote Replication Type
Details
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Built-in (native)
DataCore SANsymphonys remote replication function, Asynchronous Replication, is called upon when secondary copies will be housed beyond the reach of Synchronous Mirroring, as in distant Disaster Recovery (DR) sites. It relies on a basic IP connection between locations and works in both directions. That is, each site can act as the disaster recovery facility for the other. The software operates near-synchronously, meaning that it does not hold up the application waiting on confirmation from the remote end that the update has been stored remotely.
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Built-in (Stretched Clusters only)
External
VMware vSAN does not have any remote replication capabilities of its own. Stretched Clustering with synchronous replication is the exception.
Therefore in non-stretched setups it relies on external remote replication mechanisms like VMwares free-of-charge vSphere Replication (VR) or any vSphere compatible 3rd party remote replication application (eg. Zerto VR).
vSphere Replication requires the deployment of virtual appliances. No specific integration exists between VMware vSAN and VMware vSphere VR.
As of vSAN 7.0 vSphere Replication objects are visible in the vSAN capacity view. Objects are recognized as vSphere replica type, and space usage is accounted for under the Replication category.
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Built-in (native)
NetApp HCI supports replication to another NetApp HCI via Element Real-Time Replication or to an ONTAP AFF/FAS cluster via SnapMirror. The SnapMirror feature also allows replication to systems running ONTAP Select or Cloud Volumes ONTAP.
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Remote Replication Scope
Details
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To remote sites
To MS Azure Cloud
On-premises deployments of DataCore SANsymphony can use Microsoft Azure cloud as an added replication location to safeguard highly available systems. For example, on-premises stretched clusters can replicate a third copy of the data to MS Azure to protect against data loss in the event of a major regional disaster. Critical data is continuously replicated asynchronously within the hybrid cloud configuration.
To allow quick and easy deployment a ready-to-go DataCore Cloud Replication instance can be acquired through the Azure Marketplace.
MS Azure can serve only as a data repository. This means that VMs cannot be restored and run in an Azure environment in case of a disaster recovery scenario.
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VR: To remote sites, To VMware clouds
vSAN allows for replication of VMs to a different vSAN cluster on a remote site or to any supported VMware Cloud Service Provider (vSphere Replication to Cloud). This includes VMware on AWS and VMware on IBM Cloud.
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To remote sites
NetApp HCI supports replication to another NetApp HCI via Element Real-Time Replication or to an ONTAP AFF/FAS cluster via SnapMirror. The SnapMirror feature also allows replication to systems running ONTAP Select or Cloud Volumes ONTAP.
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Remote Replication Cloud Function
Details
|
Data repository
All public clouds can only serve as data repository when hosting a DataCore instance. This means that VMs cannot be restored and run in the public cloud environment in case of a disaster recovery scenario.
In the Microsoft Azure Marketplace there is a pre-installed DataCore instance (BYOL) available named DataCore Cloude Replication.
BYOL = Bring Your Own License
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VR: DR-site (VMware Clouds)
Because VMware on AWS and VMware on IBM Cloud are full vSphere implementations, replicated VMs can be started and run in a DR-scenario.
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N/A
NetApp HCI provides native DR and replication capabilities (Element Real-Time Replication) does not support replication to hyperscale public cloud targets (AWS, Azure, GCP).
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Remote Replication Topologies
Details
|
Single-site and multi-site
Single Site DR = 1-to-1
Multiple Site DR = 1-to many, many-to 1
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VR: Single-site and multi-site
Single Site DR = 1-to-1
Multiple Site DR = 1-to many, many-to 1
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Single-site and multi-site (limited)
Single Site DR = 1-to-1
Multiple Site DR = 1-to many, many-to 1
A NetApp HCI cluster can be paired with up to four other clusters.
Volume pairings are always one-to-one.
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Remote Replication Frequency
Details
|
Continuous (near-synchronous)
SANsymphony Asynchronous Replication is not checkpoint-based but instead replicates continuously. This way data loss is kept to a minimum (seconds to minutes). End-users can inject custom consistency checkpoints based on CDP technology which has no minimum time slot/frequency.
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VR: 5 minutes (Asynchronous)
vSAN: Continuous (Stretched Cluster)
The 'Stretched Cluster' feature is only available in the Enterprise edition.
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Continuous (Synchronous, Asynchronous)
NetApp HCI Real-Time Asynchronous Replication is not checkpoint-based but instead replicates continuously. This way data loss is kept to a minimum (seconds to minutes). The actual RPO is dependent on line latency that exists between the source and the destination site.
ONTAP SnapMirror is snapshot-based and has a minimum replication interval of 15 minutes.
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Remote Replication Granularity
Details
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VM or Volume
With SANsymphony the rough hierarchy is: physical disk(s) or LUNs -> Disk Pool -> Virtual Disk (=logical volume).
Although DataCore SANsymphony uses block-storage, the platform is capable of attaining per VM-granularity if desired.
In Microsoft Hyper-V environments, when a VM with vdisks is created through SCVMM, DataCore can be instructed to automatically carve out a Virtual Disk (=storage volume) for every individual vdisk. This way there is a 1-to-1 alignment from end-to-end and snapshots can be created on the VM-level. The per-VM functionality is realized by installing the DataCore Storage Management Provider in SCVMM.
Because of the per-host storage limitations in VMware vSphere environments, VVols is leveraged to provide per VM-granularity. DataCore SANsymphony Provider v2.01 is VMware certified for ESXi 6.5 U2/U3, ESXi 6.7 GA/U1/U2/U3 and ESXi 7.0 GA/U1.
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VR: VM
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VM (Vvols) or Volume; Snapshots-only
NetApp HCI Snapshot technology allows only snapshots created on the source cluster to be replicated. Active writes from the source volume are not replicated.
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Consistency Groups
Details
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Yes
SANsymphony provides the option to use Virtual Disk Grouping to enable end-users to restore multiple Virtual Disks to the exact same point-in-time.
With SANsymphony the rough hierarchy is: physical disk(s) or LUNs -> Disk Pool -> Virtual Disk (=logical volume).
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VR: No
Protection is on a per-VM basis only.
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No
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VMware SRM (certified)
DataCore provides a certified Storage Replication Adapter (SRA) for VMware Site Recovery Manager (SRM). DataCore SRA 2.0 (SANsymphony 10.0 FC/iSCSI) shows official support for SRM 6.5 only. It does not support SRM 8.2 or 8.1.
There is no integration with Microsoft Azure Site Recovery (ASR). However, SANsymphony can be used with the control and automation options provided by Microsoft System Center (e.g. Operations Manager combined with Virtual Machine Manager and Orchestrator) to build a DR orchestration solution.
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VMware SRM (certified)
VMware Interoperability Matrix shows official support for SRM 8.3.
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VMware SRM (certified)
NetApp provides a certified Storage Replication Adapter (SRA) for VMware Site Recovery Manager (SRM). NetApp SolidFire SRA 2.0.1.16 shows official support for SRM versions 8.2, 8.1, 6.5 and 6.1.
The NetApp SolidFire SRA is compatible with all storage nodes in NetApp HCI.
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Stretched Cluster (SC)
Details
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VMware vSphere: Yes (certified)
DataCore SANsymphony is certified by VMware as a VMware Metro Storage Cluster (vMSC) solution. For more information, please view https://kb.vmware.com/kb/2149740.
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VMware vSphere: Yes (certified)
There is read-locality in place preventing sub-optimal cross-site data transfers.
vSAN 7.0 introduces redirection for all VM I/O from a capacity-strained site to the other site, untill the capacity is freed up. This feature improves the uptime of VMs.
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N/A
At this time NetApp does not support NetApp HCI clusters that are stretched across data centers.
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2+sites = two or more active sites, 0/1 or more tie-breakers
Theoretically up to 64 sites are supported.
SANsymphony does not require a quorum or tie-breaker in stretched cluster configurations, but can be used as an optional component. The Virtual Disk Witness can provide a tie-breaker role if for instance redundant inter site paths are not implemented. The tie-breaker node (server or device) must be other than the two nodes presenting a virtual disk. Access to the Virtual Disk Witness is leading for storage node behavior.
There are 3 ways to configure the stretched cluster without any tie-breakers:
1. Default: in a split-brain scenario both sides stay active allowing upper infrastructure layers (OS/database/application) to make a decision (eg. clustering principles). In any case SANsymphony prevents a merge when there is a risk to data integrity, and the end-user has to make the choice on how to proceed next (which side is true)
2. Select one side to go inaccessible
3. Select both sides to go inaccessible.
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3-sites: two active sites + tie-breaker in 3rd site
NEW
The use of the Stretched Cluster Witness Appliance automates failover decisions in order to avoid split-brain scenarios like network partitions and remote site failures. The witness is deployed as a VM within a third site.
vSAN 6.7 introduced the option to configure a dedicated VMkernel NIC for witness traffic. This enhances data security because witness traffic is isolated from vSAN data traffic.
vSAN 7.0 U1 introduces the vSAN Shared Witness. This feature allows end-user organizations to leverage a single Witness Appliance for up to 64 stretched clusters. This is especially useful in scenarios where many edge locations are involved. The size of the Witness Appliance determines the maximum number of cluster and components that can be managed.
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N/A
At this time NetApp does not support NetApp HCI clusters that are stretched across data centers.
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<=5ms RTT (targeted, not required)
RTT = Round Trip Time
In truth the user/app with the least tolerated write latency defines the acceptable RTT or distance. In practice
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<=5ms RTT
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N/A
At this time NetApp does not support NetApp HCI clusters that are stretched across data centers.
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<=32 hosts at each active site (per cluster)
The maximum is per cluster. The SANsymphony solution can consist of multiple stretched clusters with a maximum of 64 nodes each.
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<=15 nodes at each active site
For Dell EMC VxRail the minimum stretched cluster configuration is 3+3+1, meaning 3 nodes on the first site, 3 nodes on the second site and 1 tie-breaker VM on a third site. The maximum stretched cluster configuration is 15+15+1, meaning 15 nodes on the first site, 15 nodes on the second site and 1 tie-breaker VM on a third site.
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N/A
At this time NetApp does not support NetApp HCI clusters that are stretched across data centers.
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SC Data Redundancy
Details
|
Replicas: 1N-2N at each active site
DataCore SANsymphony provides enhanced stretched cluster availability by offering local fault protection with In Pool Mirroring. With In Pool Mirroring you can choose to mirror the data inside the local Disk Pool as well as mirror the data across sites to a remote Disk Pool. In the remote Disk Pool data is then also mirrored. All mirroring happens synchronously.
1N-2N: With SANsymphony Stretched Clustering, there can be either 1 instance of the data at each site (no In Pool Mirroring) or 2 instances of the data a each site (In Pool RAID-1 Mirroring).
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Replicas: 0-3 Replicas (1N-4N) at each active site
Erasure Coding: RAID5-6 at each active site
VMware vSAN 6.6 and up provide enhanced stretched cluster availability with Local Fault Protection. You can provide local fault protection for virtual machine objects within a single site in a stretched cluster. You can define a Primary level of failures to tolerate for the cluster, and a Secondary level of failures to tolerate for objects within a single site. When one site is unavailable, vSAN maintains availability with local redundancy in the available site.
In the case of stretched clustering, selecting 0 replicas means that there is only one instance of the data available at each of the active sites.
Local Fault Protection is only available in the Enterprise edition of vSAN.
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N/A
At this time NetApp does not support NetApp HCI clusters that are stretched across data centers.
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Data Services
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Efficiency |
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Dedup/Compr. Engine
Details
|
Software (integration)
NEW
SANsymphony provides integrated and individually selectable inline deduplication and compression. In addition, SANsymphony is able to leverage post-processing deduplication and compression options available in Windows 2016/2019 as an alternative approach.
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All-Flash: Software
Hybrid: N/A
Deduplication and compression are only available in the VxRail All-Flash ('F') appliances.
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Software
NetApp HCI includes data reduction technology, that compresses and deduplicates all incoming data cluster-wide across all volumes.
Compression is completely inline, with no performance impact. During a write, a block is compressed, and during the recycling process blocks are recompressed to provide even greater efficiency.
An internal garbage collection process cleans up blocks that are no longer referenced by any metadata, including Snapshot copies.
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Dedup/Compr. Function
Details
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Efficiency (space savings)
Deduplication and compression can provide two main advantages:
1. Efficiency (space savings)
2. Performance (speed)
Most of the time deduplication/compression is primarily focussed on efficiency.
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Efficiency (Space savings)
Deduplication and compression can provide two main advantages:
1. Efficiency (space savings)
2. Performance (speed)
Most of the time deduplication/compression is primarily focussed on efficiency.
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Efficiency and Performance
Deduplication and compression can provide two main advantages:
1. Efficiency (space savings)
2. Performance (speed)
Most of the time deduplication/compression is primarily focussed on efficiency.
NetApp HCI focusses on both aspects.
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Dedup/Compr. Process
Details
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Deduplication: Inline (post-ack)
Compression: Inline (post-ack)
Deduplication/Compression: Post-Processing (post process)
NEW
Deduplication can be performed in 4 ways:
1. Immediately when the write is processed (inline) and before the write is ackowledged back to the originator of the write (pre-ack).
2. Immediately when the write is processed (inline) and in parallel to the write being acknowledged back to the originator of the write (on-ack).
3. A short time after the write is processed (inline) so after the write is acknowleged back to the originator of the write - eg. when flushing the write buffer to persistent storage (post-ack)
4. After the write has been committed to the persistent storage layer (post-process).
The first and second methods, when properly integrated into the solution, are most likely to offer both performance and capacity benefits. The third and fourth methods are primarily used for capacity benefits only.
DataCore SANSymphony 10 PSP12 and above leverage both inline deduplication and compression, as well as post process deduplication and compression techniques.
With inline deduplication incoming writes first hit the memory cache of the primary host and are replicated to the cache of a secondary host in an un-deduplicated state. After the blocks have been written to both memory caches, the primary host acknowledges the writes back to the originator. Each host then destages the written blocks to the persistent storage layer. During destaging, written blocks are deduplicates and/or compressed.
Windows Server 2019 deduplication is performed outside of IO path (post-processing) and is multi-threaded to speed up processing and keep performance impact minimal.
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All-Flash: Inline (post-ack)
Hybrid: N/A
Deduplication can be performed in 4 ways:
1. Immediately when the write is processed (inline) and before the write is ackowledged back to the originator of the write (pre-ack).
2. Immediately when the write is processed (inline) and in parallel to the write being acknowledged back to the originator of the write (on-ack).
3. A short time after the write is processed (inline) so after the write is acknowleged back to the originator of the write - eg. when flushing the write buffer to persistent storage (post-ack)
4. After the write has been committed to the persistent storage layer (post-process).
The first and second methods, when properly integrated into the solution, are most likely to offer both performance and capacity benefits. The third and fourth methods are primarily used for capacity benefits only.
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Deduplication: inline (pre-ack)
Compression: inline (pre-ack) + post process
Deduplication can be performed in 4 ways:
1. Immediately when the write is processed (inline) and before the write is ackowledged back to the originator of the write (pre-ack).
2. Immediately when the write is processed (inline) and in parallel to the write being acknowledged back to the originator of the write (on-ack).
3. A short time after the write is processed (inline) so after the write is acknowleged back to the originator of the write - eg. when flushing the write buffer to persistent storage (post-ack)
4. After the write has been committed to the persistent storage layer (post-process).
The first and second methods, when properly integrated into the solution, are most likely to offer both performance and capacity benefits. The third and fourth methods are primarily used for capacity benefits only.
NetApp HCI leverages global inline deduplication and global inline as well as post compression techniques. Incoming writes are broken into 4K blocks, assigned a hash (BlockID), compressed and then written to the NVRAM of two storage nodes in order to protect the data. When the internal Block Service identifies that the BlockID already exists, which means that the data has already been committed to the persistent flash layer, it does not destage the data twice. When destaging unique compressed 4K blocks from NVRAM to the persistent flash layer, blocks going to the same SSD are consolidated into 1MB chunks.
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Dedup/Compr. Type
Details
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Optional
NEW
By default, deduplication and compression are turned off. For both inline and post-process, deduplication and compression can be enabled.
For inline deduplication and compression the feature can be turned on per node. The entire node represents a global deduplication domain. Deduplication and compression work across pools and across vDisks. Individual pools can be selected to participate in capacity optimization. Either deduplication or compression or both can be selected per individual vDisk. Pools can host both capacity optimized and non-capacity optimized vDisks at the same time. The optional capacity optimization settings can be added/changed/removed during operation for each vDisk.
For post-processing the feature can be enabled per pool. All vDisks in that pool would be deduplicated and compressed. Each pool is an independent deduplication domain. This means only data in the pool is capacity optimized, but not across pools. Additionally, for post-processing capacity optimization can be scheduled so admins can decide when deduplication should run.
With SANsymphony the rough hierarchy is: physical disk(s) or LUNs -> Disk Pool -> Virtual Disk (=logical volume).
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All-Flash: Optional
Hybrid: N/A
NEW
Compression occurs after deduplication and just before the data is actually written to the persisent data layer.
In vSAN 7.0 U1 and onwards there are three settings to choose from: 'None', 'Compression Only' or 'Deduplication'.
When choosing 'Compression only' deduplication is effectively disabled. This optimizes storage performance, resource usage as well as availability. When using 'Compression only' a single disk failing no longer impacts the entire disk group.
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Always-on
NetApp HCIs data deduplication and compression features are always on and cannot be disabled as it is an integral component of the platform architecture providing both performance and efficiency. The fact that the storage subsystem has been completely separated from the compute subsystem in NetApp, deduplication and compression does not substract from compute resources. It also provides end-user simplicity.
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Dedup/Compr. Scope
Details
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Persistent data layer
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Persistent data layer
Deduplication and compression are not used for optimizing read/write cache.
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Read and Write caches + Persistent data layers
Deduplication and compression is used for optimizing read/write cache and persistent storage capacity.
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Dedup/Compr. Radius
Details
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Pool (post-processing deduplication domain)
Node (inline deduplication domain)
NEW
With SANsymphony the rough hierarchy is: physical disk(s) or LUNs -> Disk Pool -> Virtual Disk (=logical volume).
For inline deduplication and compression raw physical disks are added to a capacity optimization pool. The entire node represents a global deduplication domain. Deduplication and compression work across pools and across vDisks. Individual pools can be selected to participate in capacity optimization.
The post-processing capability provided through Windows Server 2016/2019 is highly scalable and can be used with volumes up to 64 TB and files up to 1 TB in size. Data deduplication identifies repeated patterns across files on that volume.
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Disk Group
Deduplication and compression is a cluster-wide setting and is performed within each disk group. Redundant copies of a block within the same disk group are reduced to one copy. However, redundant blocks across multiple disk groups are not deduplicated.
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Storage Cluster
NetApp HCI inline deduplication works globally, which means that deduplication happens across all nodes within a storage cluster.
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Dedup/Compr. Granularity
Details
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4-128 KB variable block size (inline)
32-128 KB variable block size (post-processing)
NEW
With inline deduplication and compression, the data is organized in 128 KB segments. Depending on the optimization setting, a write into such a segment first gets compressed (when compression is selected) and then a hash is generated. If the hash is unique, the 128 KB segment is written back and the hash is added to the deduplication hash-table. If the hash is not unique, the segment is referenced in the deduplication hash table and discarded. The smallest chunk in the segment can be 4 KB.
For post-processing the system leverages deduplication in Windows Server 2016/2019, files within a deduplication-enabled volume are segmented into small variable-sized chunks (32–128 KB), duplicate chunks are identified, and only a single copy of each chunk is physically stored.
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4 KB fixed block size
vSANs deduplication algorithm utilizes a 4K-fixed block size.
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4 KB fixed block size
NetApp HCI deduplication and compression use 4K fixed block segments.
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Dedup/Compr. Guarantee
Details
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N/A
Microsoft provides the Deduplication Evaluation Tool (DDPEVAL) to assess the data in a particular volume and predict the dedup ratio.
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N/A
Enabling deduplication and compression can reduce the amount of storage consumed by as much as 7x (7:1 ratio).
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Workload/Data Type dependent
NetApp uses pre-defined reduction ratios per workload for NetApp HCI based on testing. A capacity guarantee is provided to customers as part of the purchase. In exceptional scenarios a higher ratio may be agreed upon between NetApp and the individual customer organization.
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Full (optional)
Data rebalancing needs to be initiated manually by the end-user. It depends on the specific use case and end-user environment if this makes sense. When end-users want to isolate new workloads and corresponding data on new nodes, data rebalancing is not used.
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Full
Data can be redistributed evenly across all nodes in the cluster when a node is either added or removed.
For VMware vSAN data redistribution happens is two ways:
1. Automated: when physical disks are between 30% and 80% full and a node is added to the vSAN cluster, a health alert is generated that allows the end-user to execute an automated data rebalancing run. For this VMware uses the term 'proactive'.
2. Automatic: when physical disks are more than 80% full, vSAN executes an data rebalancing fully automatically, without requiring any user intervention. For this VMware uses the term 'reactive'.
As data is written, all nodes in the cluster service RF copies even when no VMs are running on the node which ensures data is being distributed evenly across all nodes in the cluster.
VMware vSAN 6.7 U3 includes proactive rebalancing enhancements. All rebalancing activities can be automated with cluster-wide configuration and threshold settings. Prior to this release, proactive rebalancing was manually initiated after being alerted by vSAN health checks.
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Full
NetApp HCI automatically rebalances data across nodes when a node is either added or removed. There is no user-intervention required for these redistribution activities.
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Yes
DataCore SANsymphonys Auto-Tiering is a real-time intelligent mechanism that continuously positions data on the appropriate class of storage based on how frequently the data is accessed. Auto-Tiering leverages any combination of Flash and traditional disk technologies, whether it is internal or array based, with up to 15 different storage tiers that can be defined.
As more advanced storage technologies become available, existing tiers can be modified as necessary and additional tiers can be added to further diversify the tiering architecture.
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N/A
The VMware vSAN storage architecture does not include multiple persistent storage layers, but rather consist of a caching layer (fastest storage devices) and a persistent layer (slower/most cost-efficient storage devices).
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N/A
The NetApp HCI storage architecture is based on a single storage layer (SSD) and hence does not include multiple persistent storage layers to distribute data across.
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Performance |
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vSphere: VMware VAAI-Block (full)
Hyper-V: Microsoft ODX; Space Reclamation (T10 SCSI UNMAP)
DataCore SANsymphony iSCSI and FC are fully qualified for all VMware vSphere VAAI-Block capabilities that include: Thin Provisioning, HW Assisted Locking, Full Copy, Block Zero
Note: DataCore SANsymphony does not support Thick LUNs.
DataCore SANsymphony is also fully qualified for Microsoft Hyper-V 2012 R2 and 2016/2019 ODX and UNMAP/TRIM.
Note: ODX is not used for files smaller than 256KB.
VAAI = VMware vSphere APIs for Array Integration
ODX = Offloaded Data Transfers
UNMAP/TRIM support allows the Windows operating system to communicate the inactive block IDs to the storage system. The storage system can wipe these unused blocks internally.
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vSphere: Integrated
VMware vSAN is an integral part of the VMware vSphere platform and as such is not a separate storage platform.
VMware vSAN 6.7 adds TRIM/UNMAP support: space that is no longer used can be automatically reclaimed, reducing the overall capacity needed for running workloads.
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vSphere: VMware VAAI-Block (full)
NetApp HCI iSCSI is fully qualified for all VMware vSphere VAAI-Block capabilities that include: Thin Provisioning, HW Assisted Locking, Full Copy, Block Zero. NetApp HCIs VAAI-Block capabilities are certified with VMware vSphere 6.0-6.7.
VAAI = VMware vSphere APIs for Array Integration.
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IOPs and/or MBps Limits
QoS is a means to ensure specific performance levels for applications and workloads. There are two ways to accomplish this:
1. Ability to set limitations to avoid unwanted behavior from non-critical clients/hosts.
2. Ability to set guarantees to ensure service levels for mission-critical clients/hosts.
SANsymphony currently supports only the first method. Although SANsymphony does not provide support for the second method, the platform does offer some options for optimizing performance for selected workloads.
For streaming applications which burst data, it’s best to regulate the data transfer rate (MBps) to minimize their impact. For transaction-oriented applications (OLTP), limiting the IOPs makes most sense. Both parameters may be used simultaneously.
DataCore SANsymphony ensures that high-priority workloads competing for access to storage can meet their service level agreements (SLAs) with predictable I/O performance. QoS Controls regulate the resources consumed by workloads of lower priority. Without QoS Controls, I/O traffic generated by less important applications could monopolize I/O ports and bandwidth, adversely affecting the response and throughput experienced by more critical applications. To minimize contention in multi-tenant environments, the data transfer rate (MBps) and IOPs for less important applications are capped to limits set by the system administrator. QoS Controls enable IT organizations to efficiently manage their shared storage infrastructure using a private cloud model.
More information can be found here: https://docs.datacore.com/SSV-WebHelp/quality_of_service.htm
In order to achieve consistent performance for a workload, a separate Pool can be created where selected vDisks are placed. Alternatively 'Performance Classes' can be assigned to differentiate between data placement of multiple workloads.
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IOPs Limits (maximums)
QoS is a means to ensure specific performance levels for applications and workloads. There are two ways to accomplish this:
1. Ability to set limitations to avoid unwanted behavior from non-critical VMs.
2. Ability to set guarantees to ensure service levels for mission-critical VMs.
The vSAN software inside VxRail currently supports only the first method and focusses on IOPs. 'MBps Limits' cannot be set. It is also not possible to guarantee a certain amount of IOPs for any given VM.
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IOPs Limits (maximums)
IOPs Guarantees (minimums)
QoS is a means to ensure specific performance levels for applications and workloads. There are two ways to accomplish this:
1. Ability to set limitations to avoid unwanted behavior from non-critical clients/hosts.
2. Ability to set guarantees to ensure service levels for mission-critical clients/hosts.
NetApp HCI supports both methods through pre-defined performance policies per volume. These policies can be changed at any point in time and on-the-fly.
NetApp HCI provides the following three-dimensional QoS settings for every individual volume/Vvol:
- Minimum IOPS: The minimum number of IOPS guaranteed for the volume.
- Maximum IOPS: The maximum number of IOPS allowed for the volume.
- Burst IOPS: The maximum number of IOPS allowed over a short period of time for the volume.
The IOPS values entered are normalized to a 4K IO size. The configuration screen shows the calculation for 8K, 16K and 256K IO sizes, as well as MBps for Maximum Bandwidth.
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Virtual Disk Groups and/or Host Groups
SANsymphony QoS parameters can be set for individual hosts or groups of hosts as well as for groups of Virtual Disks for fine grained control.
In a VMware VVols (=Virtual Volumes) environment a vDisk corresponds 1-to-1 to a virtual disk (.vmdk). Thus virtual disks can be placed in a Disk Group and a QoS Limit can then be assigned it. DataCore SANsymphony Provider v2.01 has VVols certification for VMware ESXi 6.5 U2/U3, ESXi 6.7 GA/U1/U2/U3 and ESXi 7.0 GA/U1.
In Microsoft Hyper-V environments, when a VM with vdisks is created through SCVMM, DataCore can be instructed to automatically carve out a Virtual Disk (=storage volume) for every individual vdisk. This way there is a 1-to-1 alignment from end-to-end and QoS Limits can be applied on the virtual disk level. The 1-to-1 allignment is realized by installing the DataCore Storage Management Provider in SCVMM.
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Per VM/Virtual Disk
Quality of Service (QoS) for vSAN is normalized to a 32KB block size, and treats reads the same as writes.
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Per volume
Per vdisk (Vvols)
Because NetApp HCI presents block-based storage volumes, QoS Policies can be applied to VMware datastores, Raw Device Mappings (RDMs). This also extends to individual vdisks when Vvols is leveraged.
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Per VM/Virtual Disk/Volume
With SANsymphony the rough hierarchy is: physical disk(s) or LUNs -> Disk Pool -> Virtual Disk (=logical volume).
In SANsymphony 'Flash Pinning' can be achieved using one of the following methods:
Method #1: Create a flash-only pool and migrate the individual vDisks that require flash pinning to the flash-only pool. When using a VVOL configuration in a VMware environment, each vDisk represents a virtual disk (.vmdk). This method guarantees all application data will be stored in flash.
Method #2: Create auto-tiering pools with at least 1 flash tier. Assign the Performance Class “Critical” to the vDisks that require flash pinning and place them in the auto-tiering pool. This will effectively and intelligently put as much of the data that resides in the vDisk in the flash tier as long that the flash tier has enough space available. Therefore this method is on a best-effort basis and dependent on correct sizing of the flash tier(s).
Methods #1 and #2 can be uses side-by-side in the same DataCore environment.
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Cache Read Reservation: Per VM/Virtual Disk
With VxRail the Cache Read Reservation policy for a particular VM can be set to 100% to allow all data to also exist entirely on the flash layer. The difference with Nutanix 'VM Flash Mode' is, that with 'VM Flash Mode' persistent data of the VM resides on Flash and is never destaged to spinning disks. In contrast, with VxRails Cache Read Reservation data exists twice: one instance on persistent magnetic disk storage and one instance within the SSD read cache.
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Not relevant (All-Flash only)
The NetApp HCI platform is not available as a hybrid (flash+magnetic) configuration and as such has no need for a ' Flash Pinning' feature.
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Security |
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Data Encryption Type
Details
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Built-in (native)
SANsymphony 10.0 PSP9 introduced native encryption when running on Windows Server 2016/2019.
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Built-in (native)
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Built-in (native)
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Data Encryption Options
Details
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Hardware: Self-encrypting drives (SEDs)
Software: SANsymphony Encryption
Hardware: In SANsymphony deployments the encryption data service capabilities can be offloaded to hardware-based SED offerings available in server- and storage solutions.
Software: SANsymphony provides software-based data-at-rest encryption that is XTS-AES 256bit compliant.
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Hardware: N/A
Software: vSAN data encryption; HyTrust DataControl (validated)
NEW
Hardware: vSAN does no longer support self-encrypting drives (SEDs).
Software: vSAN supports native data-at-rest encryption of the vSAN datastore. When encryption is enabled, vSAN performs a rolling reformat of every disk group in the cluster. vSAN encryption requires a trusted connection between vCenter Server and a key management server (KMS). The KMS must support the Key Management Interoperability Protocol (KMIP) 1.1 standard. In contrast, vSAN native data-in-transit encryption does not require a KMS server. vSAN native data-at-rest and data-in-transit encryption are only available in the Enterprise edition.
vSAN encryption has been validated for the Federal Information Processing Standard (FIPS) 140-2 Level 1.
VMware has also validated the interoperability of HyTrust DataControl software encryption with its vSAN platform.
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Hardware: Self-encrypting drives (SEDs)
Software: Element OS encryption
NEW
Hardware-based encryption: NetApp HCI allows encryption of all data stored within the cluster. Self-encrypting drives are available on H410S/H610S storage nodes, with FIPS-certified drives in H610S-2F storage nodes.
All drives in NetApp HCI storage nodes leverage AES 256-bit encryption at the drive level. Each drive has its own encryption key, which is created when the drive is first initialized. When you enable the encryption feature, a cluster-wide password is created, and chunks of the password are then distributed to all nodes in the cluster. No single node stores the entire password. The password is then used to password-protect all access to the drives and must then be supplied for every read and write operation to the drive.
Enabling the encryption-at-rest feature does not affect performance or efficiency on the cluster. Additionally, if an encryption-enabled drive or node is removed from the cluster with the API or web UI, Encryption-at-Rest will be disabled on the drives.
Software-based encryption: Element 12.2 introduces software encryption at rest, which can be enabled when creating a new storage cluster (and is enabled by default when creating a SolidFire Enterprise SDS storage cluster). The encryption feature encrypts all data stored on the SSDs in the storage nodes and causes only a very small (~2%) performance impact on client IO.
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Data Encryption Scope
Details
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Hardware: Data-at-rest
Software: Data-at-rest
Hardware: SEDs provide encryption for data-at-rest; SEDs do not provide encryption for data-in-transit.
Software: SANsymphony provides encryption for data-at-rest; it does not provide encryption for data-in-transit. Encryption can be enabled per individual virtual disk.
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Hardware: N/A
Software vSAN: Data-at-rest + Data-in-transit
Software Hytrust: Data-at-rest + Data-in-transit
NEW
Hardware: N/A
Software: VMware vSAN 7.0 U1 encryption provides enhanced security for data on a drive as well as data in transit. Both are optional and can be enabled seperately. HyTrust DataControl encryption also provides encryption for data-at-rest and data-in-transit.
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Hardware: Data-at-rest
Software: Data-at-rest
NEW
Hardware: NetApp HCI provides encryption for data-at-rest through the use of self-encrypting drives (SEDs); NetApp HCI does not provide encryption for data-in-transit.
Software: NetApp HCI provides encryption for data-at-rest through the use of Element OS; NetApp HCI does not provide encryption for data-in-transit.
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Data Encryption Compliance
Details
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Hardware: FIPS 140-2 Level 2 (SEDs)
Software: FIPS 140-2 Level 1 (SANsymphony)
FIPS = Federal Information Processing Standard
FIPS 140-2 defines four levels of security:
Level 1 > Basic security requirements are specified for a cryptographic module (eg. at least one Approved algorithm or Approved security function shall be used).
Level 2 > Also has features that show evidence of tampering.
Level 3 > Also prevents the intruder from gaining access to critical security parameters (CSPs) held within the cryptographic module.
Level 4 > Provides a complete envelope of protection around the cryptographic module with the intent of detecting and responding to all unauthorized attempts at physical access.
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Hardware: N/A
Software: FIPS 140-2 Level 1 (vSAN); FIPS 140-2 Level 1 (HyTrust)
FIPS = Federal Information Processing Standard
FIPS 140-2 defines four levels of security:
Level 1 > Basic security requirements are specified for a cryptographic module (eg. at least one Approved algorithm or Approved security function shall be used).
Level 2 > Also has features that show evidence of tampering.
Level 3 > Also prevents the intruder from gaining access to critical security parameters (CSPs) held within the cryptographic module.
Level 4 > Provides a complete envelope of protection around the cryptographic module with the intent of detecting and responding to all unauthorized attempts at physical access.
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Hardware: FIPS 140-2 Level 1 (SEDs)
Software: N/A
FIPS = Federal Information Processing Standard
FIPS 140-2 defines four levels of security:
Level 1 > Basic security requirements are specified for a cryptographic module (eg. at least one Approved algorithm or Approved security function shall be used).
Level 2 > Also has features that show evidence of tampering.
Level 3 > Also prevents the intruder from gaining access to critical security parameters (CSPs) held within the cryptographic module.
Level 4 > Provides a complete envelope of protection around the cryptographic module with the intent of detecting and responding to all unauthorized attempts at physical access.
NetApp HCI 1.7 supports FIPS 140-2 drive encryption for FIPS-compliant drives when installed in the H610S-2F storage node. FIPS drive encryption requires all drives in the storage cluster to be
FIPS-capable.
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Data Encryption Efficiency Impact
Details
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Hardware: No
Software: No
Hardware: Because data encryption is performed at the end of the write path, storage efficiency mechanisms are not impaired.
Software: Because data encryption is performed at the end of the write path, storage efficiency mechanisms are not impaired.
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Hardware: N/A
Software: No (vSAN); Yes (HyTrust)
Hardware: N/A
Software vSAN: Because data encryption is performed at the end of the write path, storage efficiency mechanisms are not impaired.
Software Hytrust: Because HyTrust DataControl is an end-to-end solution, encryption is performed at the start of the write path and some efficiency mechanisms (eg. deduplication and compression) are effectively negated.
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Hardware: No
Software: Yes (very limited)
NEW
Hardware: Because data encryption is performed at the end of the write path, storage efficiency mechanisms are not impaired.
Software: Element OS encryption causes only a very small (~2%) performance impact on client IO.
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Test/Dev |
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Yes
Support for fast VM cloning via VMware VAAI and Microsoft ODX.
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No
Dell EMC VxRail does not include fast cloning capabilities.
Cloning operations actually copy all the data to provide a second instance. When cloning a running VM on VxRail, all the VMDKs on the source VM are snapshotted first before cloning them to the destination VM.
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Yes
Support for fast VM cloning via VMware VAAI.
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Portability |
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Hypervisor Migration
Details
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Hyper-V to ESXi (external)
ESXi to Hyper-V (external)
VMware Converter 6.2 supports the following Guest Operating Systems for VM conversion from Hyper-V to vSphere:
- Windows 7, 8, 8.1, 10
- Windows 2008/R2, 2012/R2 and 2016
- RHEL 4.x, 5.x, 6.x, 7.x
- SUSE 10.x, 11.x
- Ubuntu 12.04 LTS, 14.04 LTS, 16.04 LTS
- CentOS 6.x, 7.0
The VMs have to be in a powered-off state in order to be migrated across hypervisor platforms.
Microsoft Virtual Machine Converter (MVMC) supports conversion of VMware VMs and vdisks to Hyper-V VMs and vdisks. It is also possible to convert physical machines and disks to Hyper-V VMs and vdisks.
MVMC has been offcially retired and can only be used for converting VMs up to version 6.0.
Microsoft System Center Virtual Machine Manager (SCVMM) 2016 also supports conversion of VMs up to version 6.0 only.
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Hyper-V to ESXi (external)
VMware Converter 6.2 supports the following Guest Operating Systems for VM conversion from Hyper-V to vSphere:
- Windows 7, 8, 8.1, 10
- Windows 2008/R2, 2012/R2 and 2016
- RHEL 4.x, 5.x, 6.x, 7.x
- SUSE 10.x, 11.x
- Ubuntu 12.04 LTS, 14.04 LTS, 16.04 LTS
- CentOS 6.x, 7.0
The VMs have to be in a powered-off state in order to be migrated across hypervisor platforms.
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Hyper-V to ESXi (external)
VMware Converter 6.2 supports the following Guest Operating Systems for VM conversion from Hyper-V to vSphere:
- Windows 7, 8, 8.1, 10
- Windows 2008/R2, 2012/R2 and 2016
- RHEL 4.x, 5.x, 6.x, 7.x
- SUSE 10.x, 11.x
- Ubuntu 12.04 LTS, 14.04 LTS, 16.04 LTS
- CentOS 6.x, 7.0
The VMs have to be in a powered-off state in order to be migrated across hypervisor platforms.
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File Services |
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Built-in (native)
SANsymphony delivers out-of-box (OOB) file services by leveraging Windows native SMB/NFS and Scale-out File Services capabilities. SANsymphony is capable of simultaneously handling highly-available block and file level services.
Raw storage is provisioned from within the SANsymphony GUI to the Microsoft file services layer, similar to provisioning Storage Spaces Volumes to the file services layer. This means any file services configuration is performed from within the respective Windows service consoles e.g. quotas.
More information can be found under: https://www.datacore.com/products/features/high-availability-nas-cluster-file-sharing.aspx
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Built-in (native)
External (vSAN Certified)
NEW
vSAN 7.0 U1 has integrated file services. vSAN File Services leverages scale-out architecture by deploying an Agent/Appliance VM (OVF templates) on individual ESXi hosts. Within each Agent/Appliance VM a container, or “protocol stack”, is running. The 'protocol stack' creates a file system that is spread across the VMware vSAN Virtual Distributed File System (VDFS), and exposes the file system as an NFS file share. The file shares support NFSv3, NFSv4.1, SMBv2.1 and SMBv3 by default. A file share has a 1:1 relationship with a VDFS volume and is formed out of vSAN objects. The minimum number of containers that need to be deployed is 3, the maximum 32 in any given cluster. vSAN 7.0 Files Services are deployed through the vSAN File Service wizard.
vSAN File Services currenty has the following restrictions:
- not supported on 2-node clusters,
- not supported on stretched clusters,
- not supported in combination with vLCM (vSphere Lifecycle Manager),
- it is not supported to mount the NFS share from your ESXi host,
- no integration with vSAN Fault Domains.
The alternative to vSAN File Services is to provide file services through Windows guest VMs (SMB) and/or Linux guest VMs (NFS) on top of vSAN. These file services can be made highly available by using clustering techniques.
Another alternative is to use virtual storage appliances from a third-party to host file services on top of vSAN. The following 3rd party File Services partner products are certified with vSAN 6.7:
- Cohesity DataPlatform 6.1
- Dell EMC Unity VSA 4.4
- NetApp ONTAP Select vNAS 9.5
- Nexenta NexentaStor VSA 5.1.2 and 5.2.0VM
- Panzura Freedom Filer VSA 7.1.9.3
However, none of the mentioned platforms have been certified for vSAN 7.0 or 7.0U1 (yet).
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Built-in (native)
NetApp ONTAP Select is an optional service provided with NetApp HCI. Deploying a single/dual node cluster of ONTAP Select within the NetApp HCI environment allows provisioning of file shares (SMB and NFS) via the ONTAP Select user interface on top of the NetApp HCI block storage. The ideal use cases are home directories and departmental file shares.
ONTAP Select is installed as part of a post NetApp Deployment Engine (NDE), customer-driven workflow.
NetApp HCI v1.8 allows the automatic configuration of NetApp ONTAP Select 9.7 file services as part of the NetApp HCI deployment process streamlined by NetApp Deployment Engine (NDE). NDE v1.8 deploys a single-node NetApp ONTAP Select cluster. A second node can be added afterwards to form an HA-pair with the first node.
NetApp ONTAP Select nodes are VMware virtual machines deployed on top of the NetApp HCI Compute node cluster. The NetApp ONTAP Select clusters initial licensing supports 2-8TB of raw storage capacity. ONTAP Select datastores are mapped to VMware virtual disks (VMDKs) that reside on the NetApp HCI storage cluster.
NetApp ONTAP Select requires a separate license (Standard or Premium).
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Fileserver Compatibility
Details
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Windows clients
Linux clients
Because SANsymphony leverages Windows Server native CIFS/NFS and Scale-out File services, most Windows and Linux clients are able to connect.
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Windows clients
Linux clients
NEW
vSAN 7.0 U1 File Services supports all client platforms that support NFS v3/v4.1 or SMB v2.1/v3. This includes traditional use cases as well as persistent volumes for Kubernetes on vSAN datastores.
vSAN 7.0 U1 File Services supports Microsoft Active Directory and Kerberos authentication for NFS.
VMware does not support leveraging vSAN 7.0 U1 File Services file shares as NFS datastores on which VMs can be stored and run.
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Windows clients
Linux clients
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Fileserver Interconnect
Details
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SMB
NFS
Because SANsymphony leverages Windows Server native CIFS/NFS and Scale-out File services, Windows Server platform compatibility applies:
SMB versions1,2 and 3 are supported, as are NFS versions 2, 3 and 4.1.
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SMB
NFS
NEW
vSAN 7.0 U1 File Services supports all client platforms that support NFS v3/v4.1 or SMB v2.1/v3. This includes traditional use cases as well as persistent volumes for Kubernetes on vSAN datastores.
vSAN 7.0 U1 File Services supports Microsoft Active Directory and Kerberos authentication for NFS.
VMware does not support leveraging vSAN 7.0 U1 File Services file shares as NFS datastores on which VMs can be stored and run.
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SMB
NFS
Supported SMB versions: 1.0, 2.0, 2.1, 3.0, 3.1.1
Supported NFS versions: v3, v4.0, v4.1, pNFS
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Fileserver Quotas
Details
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Share Quotas, User Quotas
Because SANsymphony leverages Windows Server native CIFS/NFS and Scale-out File services, all Quota features available in Windows Server can be used.
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Share Quotas
vSAN 7.0 File Services supports share quotas through the following settings:
- Share warning threshold: When the share reaches this threshold, a warning message is displayed.
- Share hard quota: When the share reaches this threshold, new block allocation is denied.
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User Quotas
User quotas can be configured and applied on a volume in order to restrict space usage for specific users and/or user groups.
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Fileserver Analytics
Details
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Partial
Because SANsymphony leverages Windows Server native CIFS/NFS, Windows Server built-in auditing capabilities can be used.
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Partial
vSAN 7.0 File Services provide some analytics capabilities:
- Amount of capacity consumed by vSAN File Services file shares,
- Skyline health monitoring with regard to infrastructure, file server and shares.
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N/A
NetApp ONTAP Select currently does not have advanced file analytics capabilities.
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Object Services |
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Object Storage Type
Details
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N/A
DataCore SANsymphony does not provide any object storage serving capabilities of its own.
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N/A
Dell EMC VxRail does not provide any object storage serving capabilities of its own.
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N/A
NetApp HCI does not provide any object storage serving capabilities of its own. However, NetApp StorageGRID can be leveraged as VMware virtual machines (minimum of 3 nodes) to deliver S3-compatible object storage. No direct integrations exist between NetApp HCI and NetApp StorageGRID.
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Object Storage Protection
Details
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N/A
DataCore SANsymphony does not provide any object storage serving capabilities of its own.
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N/A
VMware vSAN does not provide any object storage serving capabilities of its own.
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N/A
NetApp HCI does not provide any object storage serving capabilities of its own. However, NetApp StorageGRID can be leveraged as VMware virtual machines (minimum of 3 nodes) to deliver S3-compatible object storage. No direct integrations exist between NetApp HCI and NetApp StorageGRID.
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Object Storage LT Retention
Details
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N/A
DataCore SANsymphony does not provide any object storage serving capabilities of its own.
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N/A
Dell EMC VxRail does not provide any object storage serving capabilities of its own.
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N/A
NetApp HCI does not provide any object storage serving capabilities of its own. However, NetApp StorageGRID can be leveraged as VMware virtual machines (minimum of 3 nodes) to deliver S3-compatible object storage. No direct integrations exist between NetApp HCI and NetApp StorageGRID.
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Management
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Interfaces |
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GUI Functionality
Details
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Centralized
SANsymphonys graphical user interface (GUI) is highly configurable to accommodate individual preferences and includes guided wizards and workflows to simplify administration. All actions available from the GUI may also be scripted with PowerShell Commandlets to orchestrate workflows with other tools and applications.
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Centralized
Management of the vSAN software, capacity monitoring, performance monitoring and efficiency reporting can be performed through the vSphere Web Client interface.
Other functionality such as backups and snapshots are also managed from the vSphere Web Client Interface.
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Centralized
NetApp HCI management, capacity monitoring, performance monitoring and efficiency reporting is performed through the vSphere Web Client interface.
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Single-site and Multi-site
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Single-site and Multi-site
Centralized management of multicluster environments can be performed through the vSphere Web Client by using Enhanced Linked Mode.
Enhanced Linked Mode links multiple Dell EMCnter Server systems by using one or more Platform Services Controllers. Enhanced Linked Mode enables you to log in to all linked Dell EMCnter Server systems simultaneously with a single user name and password. You can view and search across all linked Dell EMCnter Server systems. Enhanced Linked Mode replicates roles, permissions, licenses, and other key data across systems. Enhanced Linked Mode requires the Dell EMCnter Server Standard licensing level, and is not supported with Dell EMCnter Server Foundation or Dell EMCnter Server Essentials.
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Single-site and Multi-site
Centralized management of one or multiple NetApp HCI clusters can be performed from a single dasboard. This means that global implementations with multiple sites in multiple countries can be easily managed. NetApp HCI vCenter Plug-in can be used to manage NetApp HCI cluster resources from other vCenter Servers using vCenter Linked Mode.
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GUI Perf. Monitoring
Details
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Advanced
SANsymphony has visibility into the performance of all connected devices including front-end channels, back-end channels, cache, physical disks, and virtual disks. Metrics include Read/write IOPs, Read/write MBps and Read/Write Latency at all levels. These metrics can be exported to the Windows Performance Monitoring (Perfmon) utility where other server parameters are being tracked.
The frequency at which performance metrics can be captured and reported on is configurable, real-time down to 1 second intervals and long term recording at 2 minutes granularity.
When a trend analysis is required, an end-user can simply enable a recording session to capture metrics over a longer period of time.
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Advanced
NEW
Performance information can be viewed on the cluster level, the Host level and the VM level. Per VM there is also a view on backend performance. Performance graphs focus on IOPS, MB/s and Latency of Reads and Writes. Statistics for networking, resynchronization, and iSCSI are also included.
End-users can select saved time ranges in performance views. vSAN saves each selected time range when end-users run a performance query.
There is also a VMware vRealize Operations (vROps) Management Pack for vSAN that provides additional options for monitoring, managing and troubleshooting vSAN.
The vSphere 6.7 Client includes an embedded vRealize Operations (vROps) plugin that provides basic vSAN and vSphere operational dashboards. The vROps plugin does not require any additional vROps licensing. vRealize Operations within vCenter is only available in the Enterprise and Advanced editions of vSAN.
vSAN observer as of vSAN 6.6 is deprecated but still included. In its place, vSAN Support Analytics is provided to deliver more enhanced support capabilities, including performance diagnostics. Performance diagnostics analyzes previously executed benchmark tests. It detects issues, suggests remediation steps, and provides supporting performance graphs for further insight. Performance Diagnostics requires participation in the Customer Experience Improvement Program (CEIP).
vSAN 6.7 U3 introduced a vSAN CPU metric through the performance service, and provides a new command-line utility (vsantop) for real-time performance statistics of vSAN, similar to esxtop for vSphere.
vSAN 7.0 introduces vSAN Memory metric through the performance service and the API for measuring vSAN memory usage.
vSAN 7.0 U1 introduces vSAN IO Insight for investigating the storage performance of individual VMs. vSAN IO Insight generates the following performance statistics which can be viewed from within the vCenter console:
- IOPS (read/write/total)
- Throughput (read/write/total)
- Sequential & Random Throughput (sequential/random/total)
- Sequential & Random IO Ratio (sequential read IO/sequential write IO/sequential IO/random read IO/random write IO/random IO)
- 4K Aligned & Unaligned IO Ratio (4K aligned read IO/4K aligned write IO/4K aligned IO/4K unaligned read IO/4K unaligned write IO/4K unaligned IO)
- Read & Write IO Ratio (read IO/writeIO)
- IO Size Distribution (read/write)
- IO Latency Distribution (read/write)
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Advanced
Individual volume details include: Actual IOPS, Average IOP Size, Burst IOP Size, Client Queue Depth, Latency (microseconds), Read Bytes, Read Latency (microseconds), Read operations, Write Bytes, Write Latency (microseconds), Write operations, Total Latency (microseconds), Throttle, Volume Utilization.
Furthermore, Performance Utilization show the percentage of cluster IOPS being consumed.
HCI v1.3 and up enable Active IQ cloud monitoring to also display performance data for Virtual Volumes (VVols) configured on a NetApp HCI cluster.
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VMware vSphere Web Client (plugin)
VMware vCenter plug-in for SANsymphony
SCVMM DataCore Storage Management Provider
Microsoft System Center Monitoring Pack
DataCore offers deep integration with VMware vSphere and Microsoft Hyper-V, as well as their respective systems management tools, vCenter and System Center.
SCVMM = Microsoft System Center Virtual Machine Manager
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VMware vSphere Web Client (integrated)
VxRail 4.7.300 adds full native vCenter plug-in support for all core day to day operations including physical views and Life Cycle Management (LCM).
VxRail 4.7.100 and up provide a VxRail Manager Plugin for VMware vCenter. The plugin replaces the VxRail Manager web interface. Also full VxRail event details are presented in vCenter Event Viewer.
vSAN 6.7 provides support for the HTML5-based vSphere Client that ships with vCenter Server. vSAN Configuration Assist and vSAN Updates are available only in the vSphere Web Client.
vSAN 6.6 and up provide integration with the vCenter Server Appliance. End-users can create a vSAN cluster as they deploy a vCenter Server Appliance, and host the appliance on that cluster. The vCenter Server Appliance Installer enables end-users to create a one-host vSAN cluster, with disks claimed from the host. vCenter Server Appliance is deployed on the vSAN cluster.
vSAN 6.6 and up also support host-based vSAN monitoring. This means end-users can monitor vSAN health and basic configuration through the ESXi host client. This also allows end-users to correct configuration issues at the host level.
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VMware vSphere Web Client (plugin)
The Netapp Element plug-in for VMware vCenter allows day-to-day storage management tasks to be performed from within VMware vCenter, such as:
- Viewing of event logs and report overviews.
- Creation of a datastore or a volume with individualized min, max, and burst QoS per application.
- Management of accounts, clusters, remote replication, data protection and VVols.
- Registration of alerts about the health of NetApp HCI in the alarm section.
VMware ESXi 6.0, 6.5, 6.7 or 7.0 is required to use the NetApp Element Plug-in for vCenter Server.
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Programmability |
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Full
Using DataCores native management console, Virtual Disk Templates can be leveraged to populate storage policies. Available configuration items: Storage profile, Virtual disk size, Sector size, Reserved space, Write-trough enabled/disabled, Storage sources, Preferred snapshot pool, Accelerator enabled/disabled, CDP enabled/disabled.
Virtual Disk Templates integrate with System Center Virtual Machine Manager (SCVMM), VMware Virtual Volumes (VVol) and OpenStack. Virtual Disk Templates are also fully supported by the REST-API allowing any third-party integration.
Using Virtual Volumes (VVols) defined through DataCore’s VASA provider, VMware administrators can self-provision datastores for virtual machines (VMs) directly from their familiar hypervisor interface. This is possible even for devices in the DataCore pool that don’t natively support VVols and never will, as SANsymphony can be used as a storage-virtualization layer for these devices/solutions. DataCore SANsymphony Provider v2.01 has VVols certification for VMware ESXi 6.5 U2/U3, ESXi 6.7 GA/U1/U2/U3 and ESXi 7.0 GA/U1.
Using Classifications and StoragePools defined through DataCore’s Storage Management Provider, Hyper-V administrators can self-provision virtual disks and pass-through LUNS for virtual machines (VMs) directly from their familiar SCVMM interface.
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Full
Storage Policy-Based Management (SPBM) is a feature of vSAN that allows administrators to create storage profiles so that virtual machines (VMs) dont need to be individually provisioned/deployed and so that management can be automated. The creation of storage policies is fully integrated in the vSphere GUI.
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Full
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REST-APIs
PowerShell
The SANsymphony REST-APIs library includes more than 200 new representational state transfer (REST) operations, so automation can be leveraged more extensively. RESTful interfaces are used by products such as Lenovo XClarity, Cisco Embedded Resource Manager and Dell OpenManage to manage infrastructure in the enterprise.
SANsymphony provides its own Powershell cmdlets.
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REST-APIs
Ruby vSphere Console (RVC)
PowerCLI
Dell EMC VxRail 4.7.100 and up include RESTful API enhancements.
Dell EMC VxRail 4.7.300 and up provide full VxRail manager functionality using RESTful API.
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REST-APIs
CLI
NetApp HCI was designed from the ground up to be 100% programmable. Therefore NetApp HCI provides rich and at the same time easy-to-comprehend REST-APIs.
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OpenStack
OpenStack: The SANsymphony storage solution includes a Cinder driver, which interfaces between SANsymphony and OpenStack, and presents volumes to OpenStack as block devices which are available for block storage.
Datacore SANsymphony programmability in VMware vRealize Automation and Microsoft System Center can be achieved by leveraging PowerShell and the SANsymphony specific cmdlets.
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OpenStack
VMware vRealize Automation (vRA)
OpenStack integration is achieved through VMware Integrated OpenStack v2.0
vRealize Automation 7 integration is achieved through vRA 7.0.
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OpenStack
Orchestration (vRO plug-in)
Ansible playbooks
Element OS provides a driver for the OpenStack Block Storage (Cinder) service. Features include:
- Volume create/delete
- Volume attach/detach
- Extend volume
- Snapshot create/delete
- List snapshots
- Create volume from snapshot
NetApp HCI currently supports Red Hat OpenStack Platform 13-16.
NetApp HCI also provides a plug-in for VMware vRealize Orchestration (vRO). The plug-in models the storage API methods as vRO workflows so scheduling and automating NetApp HCI storage administration tasks becomes easy.
There are also Ansible playbooks for Element OS and VMware vSphere.
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Full
The DataCore SANsymphony GUI offers delegated administration to secondary users through fine-grained Role-based Access Control (RBAC). The administrator is able to define Virtual Disk ownership as well as privileges associated with that particular ownership. Owners must have Virtual Disk privileges in an assigned role in order to perform operations on the virtual disk. Access can be very refined. For example, one owner may have the privilege to create a snapshot of a virtual disk, but not have the ability to serve or unserve the same virtual disk. Privilege sets define the operations that can be performed. For instance, in order for an owner to perform snapshot, rollback, or replication operations, they would require those privilege sets in an assigned role.
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N/A (not part of VxRail license bundle)
VMware vSAN does not provide any end-user self service capabilities of its own.
A self service portal enables end-users to access a portal where they can provision and manage VMs from templates, eliminating administrator requests or activity.
Self-Service functionality can be enabled by leveraging VMware vRealize Automation (vRA). This requires a separate VMware license.
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N/A
The NetApp HCI platform does not provide any end-user self service capabilities of its own.
A self service portal enables end-users to access a portal where they can provision and manage VMs from templates, eliminating administrator requests or activity.
Self-Service functionality can be enabled by leveraging VMware vRealize Orchestration (vRO). This requires a separate VMware license. NetApp HCI officially supports vRealize Orchestration (vRO) through a plug-in.
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Maintenance |
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Unified
All storage related features and functionality are built into the DataCore SANsymphony platform. The consolidation means, that only one product needs to be installed and upgraded and minimal dependencies exist with other software.
Integration with 3rd party systems (e.g. OpenStack, vSphere, System Center) are delivered seperately but are free-of-charge.
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Partially Distributed
For a number of features and functions the vSAN software inside the VxRail appliances relies on other components that need to be installed and upgraded next to the core vSphere platform. Examples are Avamar Virtual Edition (AVE), vSphere Replication (VR) and RecoverPoint for VMs (RPVM). As a result some dependencies exist with other software.
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Unified
All storage related features and functionality are built into the NetApp HCI platform. The consolidation means, that only one core product suite needs to be installed and upgraded and minimal dependencies exist with other software.
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SW Upgrade Execution
Details
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Rolling Upgrade (1-by-1)
Each SANsymphony update is packaged in an installation Wizard which contains a fully guided upgrade process. The upgrade process checks all system requirements and performs a system health before starting the upgrade process and before moving from one node to the next.
The user can also decide to upgrade a SANsymphony cluster manually and follow all steps that are outlined in the Release Notes.
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Rolling Upgrade (1-by-1)
The Dell EMC VxRail Manager software provides one-click, non-disruptive patches and upgrades for the entire solution stack.
End-user organizations no longer need professional services for stretched cluster upgrades when upgrading from VxRail 4.7.300 to the next release.
vSAN 7.0 native File Services upgrades are also performed on a rolling basis. The file shares remain accessible during the upgrade as file server containers running on the virtual machines which are undergoing upgrade fail over to other virtual machines. During the upgrade some interruptions might be experienced while accessing the file shares.
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Rolling Upgrade (1-by-1)
NEW
NetApp HCI clustered architecture allows nondisruptive storage software upgrades (Element OS) on a rolling node-by-node basis. Upgrades can be performed during production hours with little to no workload impact.
Element OS 12.2 introduces maintenance mode, which enables taking a storage node offline for
maintenance such as software upgrades or host repairs, while preventing a full sync of all data. If one or more nodes need maintenance, I/O impact can be minimized to the rest of the storage cluster by enabling maintenance mode for those nodes before beginning.
Software upgrades on compute nodes are orchestrated by VMware Update Manager (VUM). This procedure covers driver upgrades.
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FW Upgrade Execution
Details
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Hardware dependent
Some server hardware vendors offer rolling upgrade options with their base software or with a premium software suite. With some other server vendors, BIOS and Baseboard Management Controller (BMC) updated have to be performed manually and 1-by-1.
DataCore provides integrated firmware-control for FC-cards. This means the driver automatically loads the required firmware on demand.
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1-Click
The Dell EMC VxRail Manager software provides one-click, non-disruptive patches and upgrades for the entire solution stack.
VxRail 7.0 does not support vSphere Lifecycle Manager (vLCM); vLCM is disabled in VMware vCenter.
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Manual (written procedure)
NetApp HCI provides the option to update firmware, including BIOS and BMC, on compute nodes by booting into a firmware update boot media (USB drive, virutal media via BMC). Today, this process is manual and performed on one compute node at a time. NetApp Support can assist administators with performing this task.
On storage nodes, firmware is updated in conjuction with an update of the Element OS software.
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Support |
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Single HW/SW Support
Details
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No
With regard to DataCore SANsymphony as a software-only offering (SDS), DataCore does not offer unified support for the entire solution. This means storage software support (SANsymphony) and server hardware support are separate.
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Yes
Dell EMC VxRail provides unified support for the entire native solution. This means Dell EMC is the single point-of-contact for both software and hardware issues. Prerequisite is that the separate VMware vSphere licenses have not been acquired through an OEM vendor.
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Yes
The entire solution is owned by NetApp, so support for all solution components (storage, compute hardware, solution software) can be provided by a single point of contact. Support for the hypervisor is provided by a third-party like the vendor (VMware) or a partner who provides VMware support.
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Call-Home Function
Details
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Partial (HW dependent)
With regard to DataCore SANsymphony as a software-only offering (SDS), DataCore does not offer call-home for the entire solution. This means storage software support (SANsymphony) and server hardware support are separate.
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Full
VxRail uses EMC Secure Remote Services (ESRS). ESRS maintains connectivity with the VxRail hardware components around the clock and automatically notifies EMC Support if a problem or potential problem occurs.
VxRail is also supported by Dell EMC Vision. Dell EMC Vision offers Multi-System Management, Health monitoring and Automated log collection for a multitude of products from the Dell EMC family.
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Full
NetApps call-home function is called 'Active IQ' and is fully integrated into the platform. The feature is configured automatically during NetApp HCI installation. NetApp HCI telemetry is dispatched to both vCenter and Active IQ.
Active IQ is a proactive and preventative service that continuously monitors and evaluates the health of a customer’s hyperconverged infrastructure.
Active IQ is a basic support service and is included with every support plan.
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Predictive Analytics
Details
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Partial
Capacity Management: DataCore SANsymphony Analysis and Reporting supports depletion monitoring of the capacity, complements pool space threshold warnings by regularly evaluating the rate of capacity consumption and estimating when space will be depleted. The regularly updated projections give you a chance to add more storage to the pool before you run out of storage. It also helps you do a better job of capacity planning with fewer surprises. To help allocate costs, especially in private cloud and hosted cloud services, SANsymphony generates reports quantifying the storage resources consumed by specific hosts or groups of hosts. The reports tally several parameters.
Health Monitoring: A combination of system health checks and access to device S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) alerts help to isolate performance and disk problems before they become serious.
DataCore Insight Services (DIS) offers additional capabilites including log-analytics for predictive failure analysis and actionable insights - including hardware.
DIS also provides predictive capacity trend analysis in order to pro-actively warn about licensing limitations being reached within x days and/or disk pools running out of capacity.
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Full (not part of VxRail license bundle)
vRealize Operations (vROps) provides native vSAN support with multiplay dashboards for proactive alerting, heat maps, device and cluster insights, and streamlined issue resolution. Also vROps provides forward trending and forecasting to vSAN datastore as well as any another datastore (SAN/NAS).
vSAN 6.7 introduced 'vRealize Operations (vROps) within vCenter'. This provides end users with 6 dashboards inside vCenter console, giving insights but not actions. Three of these dashboards relate to vSAN: Overview, Cluster View, Alerts. One of the widgets inside these dasboards displays 'Time remaining before capacity runs out'. Because this provides only some very basic trending information, a full version of the vROps product is still required.
'vRealize Operations (vROps) within vCenter' is included with vSAN Enterprise and vSAN Advanced.
The full version of vRealize Operations (vROps) is licensed as a separate product from VMware vSAN.
In June 2019 an early access edition (=technical preview) of VxRail Analytical Consulting Engine (ACE) was released to the public for test and evaluation purposes. VxRail ACE is a cloud service that runs in a Dell EMC secure data lake and provides infrastructure machine learning for insights that can be viewed by end-user organizations on a Dell EMC managed web portal. On-premises VxRail clusters send advanced telemetry data to VxRail ACE by leveraging the existing SRS secyure transport mechanism in order to provide the cloud platform with raw data input. VxRail ACE is built on Pivotal Cloud Foundry.
VxRail ACE provides:
- global vizualization across all VxRail clusters and vCenter appliances.
- simplified health scores at the cluster and node levels;
- advanced capacity and performance metrics charting so problem areas (CPU, memory, disk, networking) can be pinpointed up to the VM level;
- future capacity planning by analyzing the previous 180 days of storage use data, and projecting data usage for the next 90 days.
VxRail ACE supports VxRail 4.5.215 or later, as well as 4.7.0001 or later. Sending advanced telemetry data to VxRail ACE is optional and can be turned off. The default collection frequency is once every hour.
VxRail ACE is designed for extensibility so that future visibility between VxRail ACE and vRealize Operations Manager is possible.
Because VxRail ACE is not Generally Available (GA) at this time, it is not yet considered in the WhatMatrix evaluation/scoring mechanism.
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Partial (Capacity)
NEW
The NetApp Active IQ provides capacity forecasting for NetApp HCI systems.
Element OS 12.2 introduces periodic health checks on SolidFire appliance drives using SMART health data from the drives. A drive that fails the SMART health check might be close to failure. If a drive fails the SMART health check, a new critical severity cluster fault appears.
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