Addon
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custom |
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Unique Feature 1
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Add-On not supported by this product
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Add-On not supported by this product
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Add-On not supported by this product
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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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- + mature and feature-rich offering
- + great ecosystem & support
- + skills prevelant
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Cons
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- - needs clear strategy for public cloud future
- - comprehensive capability but can become expensive
- - NSX leading SDN solution but skills scarce
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Content |
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THE VIRTUALIST
Content created by THE VIRTUALIST
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Content created by Virtualizationmatrix; (Contributors: Sean Cohen, Yaniv Dary, Raissa Tona, Larry W. Bailey)
Content created by Virtualizationmatrix
Thanks to Sean Cohen, Raissa Tona, Yaniv Dary and Larry W. Bailey for content contribution and review.
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The VIRTUALIST and Enzo Raso (Citrix)
Content created by THE VIRTUALIST: http://www.thevirtualist.org/ with help from Enzo Rasso (Citrix)
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Assessment |
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vSphere 6.5 Standard - Click Here For Overview
vSphere is the collective term for VMwares virtualization platform, it includes the ESX hypervisor as well as the vCenter Management suite and associate components. vSphere is considered by many the industrys most mature and feature rich virtualization platform and had its origins in the initial ESX releases around 2001/2002.
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RHV 3.5 - Click Here For Details
NEW
Red Hat Virtualization is Red Hats server and technical workstation virtualization platform. It consists of the management product RHV-M (manager) and RHV-H (hypervisor) - a purpose built, slim hypervisor based on KVM (Kernel Virtual Machine) - also referred to as Red Hat Virtualization Hypervisor. Red Hat Enterprise Linux (RHEL) also contains KVM based virtualization capabilities, typically referred to as Red Hat Enterprise Linux Hosts. RHV-M can manage RHV-H hosts as well as RHEL hypervisor hosts running KVM (but make sure to check version compatibilities). All listed features apply to both, RHV-H and RHEL host - unless pointed out otherwise.
Red Hat Virtualization is Microsoft SVVP (Server Virtualization Validation Program) Certified and RHV-M can manage Windows guests.
Vendor Messaging:
- Red Hat Virtualization is a complete virtualization management solution for virtualized servers and technical workstations.
- Red Hat Virtualization aims to provide performance advantages, competitive pricing, and a trusted, stable environment.
- Building on Red Hat Virtualization hypervisor and the popular oVirt open virtualization management project, Red Hat Virtualization positions itself as strategic virtualization alternative to proprietary virtualization platforms.
- Red Hat Virtualization provides common underlying services and management technologies for traditional virtualization workloads while also providing an on-ramp to high-level cloud functionality based on OpenStack.
With Red Hat Virtualization, you can:
* Take advantage of existing people skills and investments
* Decrease TCO and accelerate ROI
* Automate time-consuming and complicated manual tasks
* Standardize storage, infrastructure, and networking services on OpenStack (tech-preview)
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XenServer 7.1 Enterprise Edition includes features that are not available in the Standard Edition, focused on enterprise customers needs, as well as Citrix support:
- Live patching
- Conversion manager for vSphere
- Accelerate Citrix Provisioning Services performance
For Standard vs Enterprise edition, please check: http://bit.ly/2ddQiVL
NEW
Citrix released XenServer version 7.1 (code-name “Ely”) in February 2017, this major release added support for:
-PVS-Accelerator – improves virtual desktop performance and scale – further evidence that Citrix’s “Better Together” concept is firing on all cylinders!
-streamlined approach to installing product updates
-Automated Updates from within XenCenter, enabling multiple pools to be updated with a single click, including an industry first of zero-downtime live-patching for kernel and xen updates - meaning no reboots for most hotfixes
- Support for Nutanix, enabling customers to use Xenserver as the management platform hypervisor and benefit from:
NVIDIA vgpu
XenServer Hypervisor Introspection (Direct Inspect API)
IO drivers via Windows Update
Health Check
Live patching
-long-term support release (LTSR) that further that underlines Citrix’s long-term commitment to our XenServer customers
-Enhanced Conversion Manager, enabling workloads to be bulk moved from VMware ESXi/vCenter to XenServer including Linux guests
Citrix entered the Hypervisor market with the acquisition of XenSource - the main supporter of the open source Xen project - in Oct 2007. The Xen project continues to exist, see https://www.xenproject.org/
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Release Dates:
vSphere 6.5 : November 15th 2016
vSphere 6.5 is VMwares 6th generation of bare-metal enterprise virtualization software, from ESX1.x (2001/2), 2.x (2003) to Virtual Infrastructure 3 (2006), in May 2009 to vSphere 4.x. The ESXi architecture (small-footprint) became available in Dec 2007. vSphere 5 was announced July 2011 with GA August 2011 and was the first vSphere release converged on ESXi only, vSphere 5.1 was released 10th Sep 2012, vSphere 5.5 on Sep 22nd 2013, vSphere 6 on Feb 2nd 2015, vSphere 6.5 on November 15th 2016
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RHV 3.5 released in Feb 2015 - (RHV 3.4 - June 2014, RHV 3.3 - January 2014, RHV 3.2 - June 2013, RHV 3.1 - Dec 2012, RHV 2.1 - Nov 2009, 2.2: Aug 2010, RHV 3.0: Jan 2012)
NEW
Qumranet, a technology startup began the development of KVM and was subsequently acquired by Red Hat in 2008. Red Hats first release was v 2.1 in 2009 with an update in 2010 which included the virtual technical workstation capabilities. The 3.0 release in 2012 was a major milestone in porting the RHV-M manager from .NET to Java (and fully open-sourcing) alongside other improvements.
RHV 3.1 removed all requirements of any Windows-based infrastructure, but still support Microsoft Active Directory for user authentication, administration, VDI, etc. RHV 3.1 also provided a RESTful API for integration.
Since RHV 3.2, Red Hat has provided many feature enhancements, improvements in scale, enhanced reliability and integration points (hooks, OpenStack etc) documented in the matrix.
While not as large as e.g. the VMware and Microsoft ecosystem there are a large number of ISVs with products currently integrated into RHV, including Acronis for Backup/DR/Migration, Symantec Storage Foundation and Tintri for Storage, BMC TrueSight for capacity optimization, Igel, Wyse and other thin client vendors have SPICE (RHVs remote viewing protocol) integrated in some of their product offerings. Major OEM hardware vendors like IBM and HP support RHV (e.g. IBM has part numbers for all of RHVs subscription offerings). Additionally RHV enables third party plug-ins Recent plug-ins include:
- BMC connector for RHV-M REST API to collect data for managing RHV boxes without having to install an agent.
- HP OneView for Red Hat Virtualization (OVRHV) UI plug-in that that allows you to seamlessly manage your HP ProLiant infrastructure from within RHV Manager and provides actionable, valuable insight on underlying HP hardware (HP Insight Control plug-in is also available).
- NetApp Virtual Console enables rapid cloning of NetApp virtual machines, and allows NFS storage discovery, provisioning and modification from within Red Hat Virtualization Manager.
- Symantec Storage Foundation that delivers storage Quality of Service (QoS) at the application level and maximizes your storage efficiency, availability and performance across operating systems. This includes Symantec Cluster Server provides automated disaster recovery functionality to keep applications up and running. Cluster Server enables application specific fail-over and significantly reduces recovery time by eliminating the need to restart applications in case of a failure.
- Tenable Network Securitys Nessus Audit for RHV-M which queries the RHV API and reports that information within a Nessus report.
- Ansible RHV module that allows you to create new instances, either from scratch or an image, in addition to deleting or stopping instances on the RHV platform.
Visit marketplace.redhat.com/RHV to learn more about these plug-ins and RHV’s ecosystem of partner
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XenServer 7.1 Release date February 2017
Xens first public release was in 2003, becoming part of Novell SUSE 10 OS in 2005 (later also Red hat). In Oct 2007 Citrix acquired XenSource (the main maintainer of the Xen code) and released XenServer under the Citrix brand.
Version 5.6 was released in May 2010, 5.6SP2 in May 2011, 6.0 in Sep 2011, 6.1 in Sep 2012, 6.2 in June 2013, 6.5 in January 2015 and verion 7 in May 2016.
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Pricing |
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Std: $995/socket + S&S:$273 (B) or $323 (Prod);
Std + Ops Mgmt: $1995 / socket + S&S:$419 (B) or $499 (Prod)
vSphere is licensed per physical CPU (socket, not core), without restrictions on the amount of physical cores or virtual RAM configured. There are also no license restrictions on the number of virtual machines that a (licensed) host can run.
S&S basic or production (1Year example) - Production (P): 24 Hours/Day 7 Days/Week 365 Days/Year; Basic (B):12 Hours/Day Monday-Friday. Subscription and Support is mandatory. Details and other packages (Acceleration Kits Essential Kits are available). Details here: http://www.vmware.com/files/pdf/vsphere_pricing.pdf and here http://www.vmware.com/products/vsphere/pricing
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Yes (included in RHV hypervisor subscription)
The RHV-M management component is included in the RHV subscription model (i.e. single part number for both, hypervisor and management)
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Open Source (free) or two commercial editions, pricing for Standard Edition is: Annual: $695 / socket, Perpetual: $1525/ socket - both including 1 year of software maintenance.
For commercial editions (Standard or Enterprise)XenServer is licensed on a per-CPU socket basis. For a pool to be considered licensed, all XenServer hosts in the pool must be licensed. XenServer only counts populated CPU sockets.
All customers who have purchased any edition of XenApp or XenDesktop have an entitlement to use all XenServer 7.1 features
In XenServer 7.x, customers should allocate product licenses using a Citrix License Server, as with other Citrix components. From version 6.2.0 onwards, XenServer (other than via the XenDesktop licenses) is licensed on a per-socket basis. Allocation of licenses is managed centrally and enforced by a standalone Citrix License Server, physical or virtual, in the environment. After applying a per-socket license, XenServer will display as Citrix XenServer Per-Socket Edition.
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$5,995(Std) + $1,259(B) or $1,499 (P)
vCenter Server
Centralized visibility, proactive management and extensibility for VMware vSphere from a single console
VMware vCenter Server provides a centralized platform for managing your VMware vSphere environments, so you can automate and deliver a virtual infrastructure with confidence.
http://www.vmware.com/products/vcenter-server.html
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Yes, combined RHEL and RHV offering 26% savings
Red Hat offers Red Hat Enterprise Linux with Smart Virtualization (a combined solution of Red Hat Enterprise Linux and Red Hat Virtualization) that offers a 26% savings over buying each product separately. Red Hat Enterprise Linux with Smart Virtualization is the ideal platform for virtualized Linux workloads. Red Hat Enterprise Linux with Smart Virtualization enables organization to virtualize mission-critical
applications while delivering unparalleled performance, scalability, and security features. See details here: http://red.ht/KBgLO5
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Free (XenCenter)
Citrix XenCenter is the Windows-native graphical user interface for managing Citrix XenServer. It is included for no additional cost (open source as well as commercial version).
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Bundle/Kit Pricing
Details
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yes
Kits:
- VMware vSphere Remote Office Branch Office Editions
- VMware vSphere Essentials Kits
- VMware vSphere and vSphere with Operations Management Acceleration Kits
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RHV: No (RHEL: 1/4/unlimited)
RHV subscriptions include the RHV-H hypervisor and RHV-Manager, they do not include the rights to use RHEL as the guest operating system in the virtual machines being managed by RHV.
The customer would purchase this separately by buying a RHEL for Virtual Datacenter subscription.
Please note that RHEL hosts generate additional subscription costs that are not included with RHV (see https://www.redhat.com/apps/store/server/ for details). RHEL hosts are priced by sockets (2, 4), number of virtual guests included (1, 4, unlimited) and subscription levels (Standard/Premium).
Or, the customer can buy the Red Hat Enterprise Linux with Smart Virtualization which includes both RHV and RHEL for use as the guest operating System. http://red.ht/1lT1fww
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Yes
XenServer is included for free with all XenApp and XenDesktop editions media kit
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Guest OS Licensing
Details
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No
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Yes (RHV-M)
RHV-M - the Red Hat Virtualization Manager with a web-driven UI is central management console.
RHV 3.5 is based entirely on Open Source Software, with no dependencies on proprietary server infrastructures or web browsers. A centralized management system with a search-driven graphical interface supporting up to hundreds of hosts and thousands of virtual machines. The fully featured enterprise management system enables customers to centrally manage their entire virtual environments, which include virtual datacenters, clusters, hosts, guest virtual servers and technical workstations, networking, and storage.
RHV-M is also localized in various languages including: French, German, Japanese, Simplified Chinese, Spanish and English.
From RHV 3.3 there is full support for integrated external applications plug-ins from HP, Symantec, and NetApp – Learn more through the RHV marketplace - http://marketplace.redhat.com/RHV
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No
There are no guest OS licensing included with the XenServer license. Guest OSs need to be therefore licensed separately.
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VM Mobility and HA
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VM Mobility |
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Live Migration of VMs
Details
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Yes vMotion
- Cross vSwitch vMotion Only
vMotion
- Cross vSwitch vMotion (all versions)
- Cross vCenter vMotion (n/a for Standard)
- Long Distance vMotion (n/a for Standard)
- Cross Cloud vMotion (n/a for Standard)
- Encryption vMotion (n/a for Standard)
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Yes (except with CPU pass-through)
Each cluster is configured with a minimal CPU type that all hosts in that cluster must support (you specify the CPU type in the RHV-M GUI when creating the cluster). Guests running on hosts within the cluster all run on this CPU type, ensuring that every guest can be live migrated to any host within the cluster. This cannot be changed after creation without significant disruption. All hosts in a cluster must run the same CPU type (Intel or AMD).
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Yes XenMotion
XenMotion is available in all versions of XenServer and allows you to move a running VM from one host to another host, when the VMs disks are located on storage shared by both hosts. This allows for pool maintenance features such as Workload Balancing (WLB), High Availability (HA), and Rolling Pool Upgrade (RPU) to automatically move VMs. These features allow for workload leveling, infrastructure resilience, and the upgrade of server software, without any VM downtime. Storage can only be shared between hosts in the same pool, as a result, VMs can only be moved within the same pool.
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Migration Compatibility
Details
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Yes (EVC)
Enhanced vMotion Compatibility - enabled on vCenter cluster-level, utilizes Intel FlexMigration or AMD-V Extended Migration functionality available with most newer CPUs (but cannot migrate between Intel and AMD), Details here: http://kb.vmware.com/kb/1005764
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Yes
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Yes (Heterogeneous Pools)
XenServer 7.0 introduced improved support for Heterogeneous Pools which enables live migration across different CPU types of the same vendor (requires AMD Extended Migration or Intel Flex Migration), details here: http://bit.ly/1ADu7Py.
This capability is maintained in XenServer 7.1
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Yes
NEW
Maintenance mode is a core feature to prepare a host to be shut down safely.
vSphere 6.5: Faster Maintenance Mode and Evacuation Updates.
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Yes (LB) - Built-in (CPU) and Scheduler for custom
Yes - a policy engine determines the specific host on which a virtual machine runs. The policy engine decides which server will host the next virtual machine based on whether load balancing criteria have been defined, and which policy is being used for that cluster. RHV-M will use live migration to move virtual machines around the cluster as required.
From RHV-M 3.3 a new scheduler handles virtual machine placement, allowing users to create new scheduling policies, and also write their own logic in Python and include it in a policy.
- The new scheduler serves scheduling requests for running or migrating virtual machines according to a policy.
- The scheduling policy also includes load balancing functionality.
- Scheduling is performed by applying hard constraints and soft constraints to get the optimal host for that request at a given point of time
- The infrastructure allowing users to extend the new scheduler, is based on a service called ovirt-scheduler-proxy. The services purpose is for RHV admins to extend the scheduling process with custom python filters, weight functions and load balancing modules.
- Every cluster has a scheduling policy. Prior to 3.3, there were only three main policies - None, Even distribution, and Power saving - and now administrators can create their own policies or use the built-in policies which were extended to support new capabilities such as shutting down servers for power saving policy.
The load balancing process runs once every minute for each cluster in a data center. You can disable automatic migration for individual vm or pin them to specific hosts.
You can choose to set the policy as either even distribution or power saving, but NOT both.
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Yes
Enabled through XenCenter
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Automated Live Migration
Details
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No
vSphere 6.5
VM Distribution: Enforce an even distribution of VMs.
Memory Metric for Load Balancing: DRS uses Active memory + 25% as its primary metric.
CPU over-commitment: This is an option to enforce a maximum vCPU:pCPU ratios in the cluster.
Network Aware DRS - system look at the network bandwidth on the host when considering making migration recommendations.
Storage IO Control configuration is now performed using Storage Policies and IO limits enforced using vSphere APIs for IO Filtering (VAIO).
Storage Based Policy Management (SPBM) framework, administrators can define different policies with different IO limits, and then assign VMs to those policies.
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Yes (Power Saving)
When Power saving is enabled in a cluster it distributes the load in a way that consolidates virtual machines on a subset of available hosts. This enables surplus hosts that are not in use to be powered down, saving power. You can set the threasholds in the RHV-M GUI to specify the Minimum Service Level a host is permitted to have.
You must also specify the time interval in minutes that a host is permitted to run below the minimum service level before remaining virtual machines are migrated to other hosts in the cluster - as long as the maximum service level set also permits this.
LIMITATIONS:
- You can enable either Load Balancing or Power Savings on a cluster but not both concurrently.
- Currently only CPU utilization is considered.
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Yes Workload Balancing
NEW
Workload Balancing (WLB) which was reintroduced in 6.5 is now enhanced with XenServer 7.0.
Workload Balancing 7.1 is supported on XenServer 7.x, 6.5 and includes the following enhanced features:
- Host disk Read/Write I/O. Introduces host disk Read/Write I/O recommendations for workload optimization to complement the existing CPU, memory, and network load balancing capabilities
- CentOS 7.2. Workload Balancing VPX is based on 64-bit CentOS 7.2
Details here: http://bit.ly/2mrYNVo
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No
Distributed Power Management - enables to consolidate virtual machines onto fewer hosts and power down unused capacity - reducing power and cooling. This can be fully automated where servers are powered off when not needed and powered back on when workload increases.
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Yes
NEW
Storage Live Migration is officially supported since RHV 3.2 that allowed migration of virtual machine disks to different storage devices while the virtual machine is running.
RHV 3.3 added the ability to do it to several disks of the same vm concurrently.
RHV 3.4 added the ability to do cold move between any two storage domains in the same DC (e.g., NFS and iSCSI) and Storage Live Migration between types of file domains (NFS/POSIX/Gluster) or block domains (FCP/iSCSI).
RHV 3.5 added the option to move an entire storage domain between DCs or even between setups.
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Yes Workload Balancing
NEW
Power management is part of XenServer Workload Balancing (WLB). More inf: http://bit.ly/2mrYNVo
Background: Power Management introduced with 5.6 was able to automatically consolidate workloads on the lowest possible number of physical servers and power off unused hosts when their capacity is not needed. Hosts would be automatically powered back on when needed.
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Storage Migration
Details
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Yes (Live Storage vMotion)
Storage vMotion allows to perform live migration of virtual machine disk files (e.g. across heterogeneous storage arrays) without vm downtime. Storage DRS handles initial vmdk placement and gives migration recommendations to avoid I/O and space utilization bottlenecks on the datastores in the cluster. The migration is performed using storage vMotion.
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200 hosts/cluster
That is the supported maximum number of hosts per RHV DataCenter and also per cluster (the theoretical KVM limit is higher).
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Yes (Storage XenMotion)
NEW
Storage XenMotion in XenServer 7.x now works with the VM in any power state (stopped, paused or running)
XenServer 6.1 introduced the long awaited (live) Storage XenMotion capability
Storage XenMotion allows storage allocation changes while VMs are running or moved from one host to another including scenarios where a) VMs are NOT located on storage shared between the hosts (shared nothing live migration) and (b) hosts are not even in the same resource pool. This enables system administrators to:
- Live migration of a VM disk across shared storage targets within a resource pool (e.g. move between LUNs when one is at capacity);
- Live migration of a VM disk from one storage type to another storage type within a resource pool (e.g. perform storage array upgrades)
- Live migration of a VM disk to or from local storage on a XenServer host within a resource pool (reduce deployment costs by using local storage)
- Rebalance or move VMs between XenServer pools (for example moving a VM from a development environment to a production environment);
Starting with XenServer 6.1, administrators initiating XenMotion and Storage XenMotion operations can specify which management interface
transfers should occur over. Through the use of multiple management interfaces, the virtual disk transfer can occur with less impact on both core XenServer operations and VM network utilization.
Citrix supports up to 3 concurrent Storage XenMotion operations. The maximum number for (non-CDROM) VDIs per VM = six. Allowed Snapshots per VM undergoing Storage XenMotion = 1.
Technical details here: http://bit.ly/2lNgACU
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HA/DR |
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max 64 nodes / 8000 vm per cluster
Up to 64 nodes can be in a DRS/HA cluster, with a maximum of 8000 vm/cluster
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Yes (HA)
High availability is an integrated feature of RHV and allows for virtual machines to be restarted in case of a host failure.
HA has to be enabled on a virtual machine level. You can specify levels of priority for the vm (e.g. if resources are restrained only high priority vm are being restarted). Hosts that run highly available vm have to be configured for power management (to ensure accurate fencing in case of host failure).
Fencing Details: When a host becomes non-responsive it potentially retains the lock on the virtual disk images for virtual machines it is running. Attempting to start a virtual machine on a second host could cause data corruption. Fencing allows RHV-M to safely release the lock (using a fence agent that communicates with the power management card of the host) to confirm that a problem host has truly been rebooted.
RHV-M gives a non-responsive host a grace period of 30 seconds before any action is taken in order to allow the host to recover from any temporary errors.
Note: The RHV-M manager needs to be running for HA to function (unlike e.g. VMware HA or Hyper-V HA that do not rely on vCenter / VMM for the failover capability), also HA can not be enabled on the cluster level.
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16 hosts / resource pool
16 Hosts per Resource Pool.
Please see XenServer 7.1 Configuration Limits document http://bit.ly/2mpocPc
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Integrated HA (Restart vm)
Details
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Yes (VMware HA)
NEW
vSphere 6.5 Proactive HA detect hw condition evacuate host before failure (plugin provided OEM vendors)
Quarantine mode - host is placed in quarantine mode if it is considered in degraded state
Simplified vSphere HA Admission Control - 'Percentage of Cluster Resources' admission control policy
vSphere 6.0
- Support for Virtual Volumes – With Virtual Volumes a new type of storage entity is introduced in vSphere 6.0.
- VM Component Protection – This allows HA to respond to a scenario where the connection to the virtual machine’s datastore is impacted temporarily or permanently.
“Response for Datastore with All Paths Down”
“Response for Datastore with Permanent Device Loss”
- Increased scale – Cluster limit has grown from 32 to 64 hosts and to a max of 8000 VMs per cluster
- Registration of “HA Disabled” VMs on hosts after failure.
VMware HA restarts virtual machines according to defined restart priorities and monitors capacity needs required for defined level of failover.
vSphere HA in vSphere 5.5 has been enhanced to conform with virtual machine-virtual machine anti-affinity rules. Application availability is maintained by controlling the placement of virtual machines recovered by vSphere HA without migration. This capability is configured as an advanced option in vSphere 5.5.
vSphere 5.5 also improved the support for virtual Microsoft Failover Clustering (cluster nodes in virtual machines) - note that this functionality is independent of VMware HA and requires the appropriate Microsoft OS license and configuration of a Microsoft Failover Cluster. Microsoft clusters running on vSphere 5.5 now support Microsoft Windows Server 2012, round-robin path policy for shared storage, and iSCSI and Fibre Channel over Ethernet (FCoE) for shared storage.
While not obvious to the user - with vSphere 5, HA has been re-written from ground-up, greatly reducing configuration and failover time. It now uses a one master - all other slaves concept. HA now also uses storage path monitoring to determine host health and state (e.g. useful for stretched cluster configurations).
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Yes (HA, WatchDog)
RHV supports watchdog device for linux guests that restarts virtual machines in case of OS failure. High availability (in addition to monitoring physical hosts) also monitors all virtual machines, so if the virtual machines operating system crashes, a signal is sent to automatically restart the virtual machine, but this is with host change.
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Yes
XenServer High Availability protects the resource pool against host failures by restarting virtual machine. HA allows for configuration of restart priority and failover capacity. Configuration of HA is simple (effort similar to enabling VMware HA).
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Automatic VM Reset
Details
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Yes (VMware HA)
NEW
vSphere 6.5 - Orchestrated Restart - VMware has enforced the VM to VM dependency chain, for a multi-tier application installed across multiple VMs.
Uses heartbeat monitoring to reset unresponsive virtual machines.
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No
There is no live lock-step mirroring support in RHV (aka Fault Tolerance in VMware) - although the theoretical capability is available in KVM. Red Hat tends to points out that the limitations around this technology (inability to take e.g. snap shots, perform a live storage migrate, limited guest vCPU support, high bandwidth/processing requirements) can make it inappropriate for enterprise implementation).
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No
There is no automated restart/reset of individual virtual machines e.g. to protect against OS failure
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VM Lockstep Protection
Details
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Yes (Fault Tolerance) 2 vCPUs.
NEW
vSphere 6.5 FT has more integration with DRS and enhanced Network (lower the network latency)
Fault Tolerance brings continuous availability protection for VMs with up to 4 vCPUs in Enterprise Plus and Standard is 2 vCPUs.
Uses a shadow secondary virtual machine to run in lock-step with primary virtual machine to provide zero downtime protection in case of host failure.
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No (native);
Yes (with Vendor Add-On: Satellite
There is no integrated application level monitoring or restart of services/vm in case of application failures.
You can e.g. use Symantec Cluster Server to mitigate this.
This is possible using Satellite 6.
This is a Fee-based Add-On; Details - http://www.redhat.com/en/technologies/linux-platforms/satellite
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No
While XenServer can perform vm restarts in case of a host failure there is no integrated mechanism to provide zero downtime failover functionality.
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Application/Service HA
Details
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No
vSphere 6.5 Proactive HA detect hw condition evacuate host before failure (plugin provided OEM vendors)
Quarantine mode - host is placed in quarantine mode if it is considered in degraded state
Simplified vSphere HA Admission Control - 'Percentage of Cluster Resources' admission control policy
VMware HA restarts virtual machines according to defined restart priorities and monitors capacity needs required for defined level of failover.
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No (yes with Symantec Storage Foundation - Fee-Based Add-On)
There is no natively provided Site Failover capability in RHV.
You can e.g. use Symantec Storage Foundation to mitigate this.
Since RHV 3.2 Red Hat supports a third-party plug-in framework, enabling third parties to integrate new features and actions directly into the RHV Manager user interface.
RHV-M 3.5 fully supports a Symantec Storage Foundation plug-in that provides disaster recovery in case of a failure.
Symantec Storage Foundation offers push button disaster recovery orchestration and features completely automated failover of a Red Hat Virtualization environment over to a disaster recovery site. This includes guests, guest network reconfiguration, and storage reconfiguration. It is designed to provide high availability and disaster recovery for databases, custom applications, and complete multi-tiered applications across physical and virtual environments over any distance.
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No
There is no application monitoring/restart capability provided with XenServer
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Replication / Site Failover
Details
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Yes (vSphere Replication)
DR Orchestration (Vendor Add-On: VMware SRM)
NEW
vSphere Replication is VMware’s proprietary hypervisor-based replication engine designed to protect running virtual machines from partial or complete site failures by replicating their VMDK disk files.
This version extends support for the 5 minute RPO setting to the following new data stores: VMFS 5, VMFS 6, NFS 4.1, NFS 3, VVOL and VSAN 6.5.
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Yes
In RHV-H you can upgrade and reinstall a Red Hat Virtualization Hypervisor host from an ISO image centrally stored on the Red Hat Virtualization Manager. Upgrading and reinstalling means that you are stopping and restarting the host. This can be either done manually by entering maintenance mode for the individual hosts or using a automated process of scheduling and applying updates to the cluster by setting hosts to maintenance mode in round-robin fashion (like e.g. with VMware Update Manager).
In RHEL Hypervisor hosts Patching is done via the normal patching processes via RHN or Satellite. Reboot can either be done manually or scheduled in round-robin fashion.
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Integrated Disaster Recovery (no storage array control)
XenServer 6 introduced the new Integrated Site Recovery (maintained in 7.1), replacing the StorageLink Gateway Site Recovery used in previous versions. It utilizes the native remote data replication between physical storage arrays and automates the recovery and failback capabilities. The new approach removes the Windows VM requirement for the StorageLink Gateway components and it works now with any iSCSI or Hardware HBA storage repository (rather only the restricted storage options with StorageLink support). You can perform failover, failback and test failover. You can configure and operate it using the Disaster Recovery option in XenCenter. Please note however that Site Recovery does NOT interact with the Storage array, so you will have to e.g. manually break mirror relationships before failing over. You will need to ensure that the virtual disks as well as the pool meta data (containing all the configuration data required to recreate your vims and vApps) are correctly replicated to your secondary site.
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Management
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General |
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Central Management
Details
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Yes (vCenter Server Standard)
NEW
vCenter Server Standard
Centralized visibility, proactive management and extensibility for VMware vSphere from a single console
VMware vCenter Server provides a centralized platform for managing your VMware vSphere environments, so you can automate and deliver a virtual infrastructure with confidence.
Available as Windows or Apliance VCSA with embeded or separate PSC.
- Simplified architecture (integrated vCenter Server Appliance, Update Manager included all-in-one), no Windows/SQL licensing
- Native High Availability (HA) of vCenter for the appliance is built-in – Automatic failover (Web Client may require re-login)
- Native Backup and Restore of vCenter appliance – Simplified backup and restore with a new native file-based solution. Restore the vCenter Server configuration to a fresh appliance and stream backups to external storage using HTTP, FTP, or SCP protocols.
- New HTML5-based vSphere Client that is both responsive and easy to use (Based on our new Clarity UI)
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Third-party plug-in framework
NEW
RHV focuses on managing the virtual infrastructure and can also manage RHSS.
Also, RHV-M 3.3 (and onwards) integrates with 3rd party applications including:
- BMC connector for RHV-M REST API to collect data for managing RHV boxes without having to install an agent.
- HP OneView for Red Hat Virtualization (OVRHV) UI plug-in that that allows you to seamlessly manage your HP ProLiant infrastructure from within RHV Manager and provides actionable, valuable insight on underlying HP hardware (HP Insight Control plug-in is also available).
- NetApp Virtual Console enables rapid cloning of NetApp virtual machines, and allows NFS storage discovery, provisioning and modification from within Red Hat Virtualization Manager.
- Symantec Storage Foundation that delivers storage Quality of Service (QoS) at the application level and maximizes your storage efficiency, availability and performance across operating systems. This includes Symantec Cluster Server provides automated disaster recovery
functionality to keep applications up and running. Cluster Server
enables application specific fail-over and significantly reduces
recovery time by eliminating the need to restart applications in case of
a failure.
- Tenable Network Securitys Nessus Audit for RHV-M which queries the RHV API and reports that information within a Nessus report.
- Ansible RHV module that allows you to create new instances, either from scratch or an image, in addition to deleting or stopping instances on the RHV platform.
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Yes (XenCenter)
XenCenter is the central Windows-based multi-server management application (client) for XenServer hosts (including the open source version).
It is different to other management apps (e.g. SCVMM or vCenter) which typically have a management server/management client architecture where the management server holds centralized configuration information (typically in a 3rd party DB). Unlike these management consoles, XenCenter distributes management data across XenServer servers (hosts) in a resource pool to ensure there is no single point of management failure. If a management server (host) should fail, any other server in the pool can take over the management role. XenCenter is essentially only the client.
License administration is done using a separate web interface.
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Virtual and Physical
Details
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Limited (plug-ins)
vCenter and associated components focus on management of virtual infrastructure - physical (non-virtualized) infrastructure will typically require separate management.
However, one can argue that there are increasingly aspects of physical management (bare metal host deploy, vCenter Operations capabilities, vCenter monitoring of physical hosts etc. but the core focusses on the virtual aspects).
Additionally, VMware encourages 3rd party vendors to provide management plug-ins for the vCenter Client (classic or web) that can manage peripheral components of the environment (3rd party storage, servers etc.).
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Yes (AD and IPA)
RHV offers the choice to either integrate with Microsoft Active Directory or use Red Hat IPA (based upon open technologies and standards) with support for LDAP and Kerberos, centrally managed identity, single sign-on services, high availability directory services or Red Hat Directory Services (RHDS).
RHV provides a range of pre-configured or default roles, from the Superuser or system administration of the platform, to an end user with permissions to access a single virtual machine only. Additional roles can be added and customized to suit the end user environment.
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Limited (plug-ins)
NEW
XenCenter focusses on managing the virtual infrastructure (XenServer host and the associated virtual machines).
XenServer 7.1 sees the introduction of an updated System Center Operations Manager (SCOM) integration pack. This enabling the management and monitoring of XenServer hosts and VMs and is available for no additional charge for XenServer 7.1 Enterprise Edition users (see http://bit.ly/2cXr14v for details)
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RBAC / AD-Integration
Details
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Yes (vCenter and ESXi hosts)
Platform Services Controller (PSC) deals with identity management for administrators and applications that interact with the vSphere platform.
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No (native)
Yes (with Vendor Add-On: CloudForms)
No - RHV exclusively manages Red Hat based environments.
Yes with Red Hat CloudForms - users can manage multiple hypervisor vendors. Details here: http://red.ht/I8JG3E (additional cost, not included in RHV subscription)
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Yes (hosts/XenCenter)
XenServer 5.6 introduced Role Based Access Control by allowing the mapping of a user (or a group of users) to defined roles (a named set of permissions), which in turn have the ability to perform certain operations. RBAC depends on Active Directory for authentication services. Specifically, XenServer keeps a list of authorized users based on Active Directory user and group accounts. As a result, you must join the pool to the domain and add Active Directory accounts before you can assign roles.
There are 6 default roles: Pool Admin, Pool Operator, VM Power Admin, VM Admin, VM Operator and Read Only - which can be listed and modified using the xe CLI.
Details here: http://bit.ly/2n1z5Uz
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Cross-Vendor Mgmt
Details
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vRealize Automation (Vendor Add-On)
VMware vRealize Automation automates the delivery of personalized infrastructure, applications and custom IT services.
This cloud automation software lets you deploy across a multi-vendor hybrid cloud infrastructure, giving you both flexibility and investment protection for current and future technology choices.
http://www.vmware.com/mena/products/vrealize-automation.html
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Yes (RHV-M, Power User Portal)
Yes, RHV-M is Java based and is accessed through a web browser GUI, RESTful API with session support, Linux CLI, Python SDK, Java SDK.
RHV also offers a Power User Portal, a web-based access portal for user (Red Hat positions it as an entry-level Infrastructure as a Service (IaaS) user portal to: Create, edit and remove virtual machines, Manage virtual disks and network interfaces, Assign user permissions to virtual machines, Create and use templates to rapidly deploy virtual machines, Monitor resource usage and high-severity events, Create and use snapshots to restore virtual machines to a previous state.
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No (native)
Yes (Vendor Add-On: CloudPlatform)
XenCenter only manages Citrix XenServer hosts.
Comments:
- Citrixs Desktop Virtualization product (XenDesktop, fee based add-on) supports multiple hypervisors (ESX, XenServer, Hyper-V)
- The Citrix XenServer Conversion Manager in 7.1 now enables batch import of Windows and Linux VMs created with VMware products into a XenServer pool to reduce costs of converting to a XenServer environment).
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Browser Based Mgmt
Details
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Yes (vSphere Web Client, HTML5 Web Client)
vSphere Client - new version of the HTML5-based vSphere Client that will run alongside the vSphere Web Client. The vSphere Client is built right into vCenter Server 6.5 (both Windows and Appliance) and is enabled by default.
vSphere Web Client - improvements will help with the overall user experience. (Home screen reorganized, Performance improvements, Live refresh for power states, tasks.)
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Yes (extended functionality with CloudForms - Fee-Based Add On)
RHV has comprehensive data warehouse with a stable API and reports package that provides a suite of pre-configured reports that enable you to monitor and analyse the system at data center, cluster and host levels.
It also provides dashboards in the UI to monitor the system in these different levels.
CloudForms - offers cloud and virtualization operations management advance capabilities:
Note that CloudForms is an additional Fee-Based offering not covered by the RHV subscription!
Features of the cloud and virtualization operations management capabilities:
- delivering IaaS with self-service
- service catalogs, automated provisioning and life cycle management
- monitoring and optimization of infrastructure resources and workloads
- metering, resource quotas, and chargeback
- proactive management, advanced decision support, and intelligent automation through predictive analytics
- provides visibility and reporting for governance, compliance, and management insight
- Enforces enterprise policies in real-time, ensuring cloud security, reliability, and availability
- IT process, task, and event automation.
Details here: www.redhat.com/en/technologies/cloud-computing/cloudforms
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Not directly with XenCenter but possible with XenOrchestra (Open Source)
More info: http://bit.ly/2m7FVIG
Web Self Service (retired with the launch of XenServer 6.2) was a lightweight portal which allowed individuals to operate their own virtual machines without having administrator credentials to the XenServer host. For large infrastructures, OpenStack is a full orchestration product with far greater capability; for a lightweight alternative, xvpsource.org offers a free open source product.
Related Citrix products have browser based access, for example Storefront (next generation of Web Interface)
XenOrchestra is a web interface to visualize and administrate your XenServer (or XAPI enabled) hosts. No agent is requiered to make it work. It aims to be easy to use on any device supporting modern web technologies (HTML 5, CSS 3, JavaScript) such as your desktop computer or your smartphone. More info: http://bit.ly/2m7FVIG
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Adv. Operation Management
Details
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Limited (native) - vCenter Operations
Full (with Vendor Add-On: vRealize Operations)
VMware vRealize Operations. Optimize resource usage through reclamation and right sizing, cross-cluster workload placement and improved planning and forecasting. Enforce IT and configuration standards for an optimal infrastructure.
http://www.vmware.com/products/vrealize-operations.html
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Yes (Live Migration - unlimited concurrent migrations, 3 by default)
Yes, live migration is fully supported with unlimited concurrent migrations (depending only on available resources on other hosts and network speed). By default limited to 3 concurrent outgoing migrations and each live migration event is limited to a maximum transfer speed of 32 MiBps.
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No
There is no advanced operations management tool included with XenServer.
Additional Info:
XenServers Integration Suite Supplemental Pack allows inter-operation with Systems Center Operations Manager (SCOM). SCOM enables monitoring of host performance when installed on a XenServer host.
Both of these tools can be integrated with your XenServer pool by installing the Integration Suite Supplemental Pack on each of your XenServer hosts.
For virtual desktop environments Citrix EdgeSight is a performance and availability management solution for XenDesktop, XenApp and endpoint systems. EdgeSight monitors applications, devices, sessions, license usage, and the network in real time, allowing users to quickly analyze, resolve, and proactively prevent problems.
EdgeSight is actually discontinued and replaced by Citrix Director http://bit.ly/2lKLpaE
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Updates and Backup |
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Hypervisor Upgrades
Details
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Yes (Update Manager)
NEW
VMware Update Manager (VUM) is now part of the vCenter Server Appliance.
VUM is using own postgress db, can benefit from VCSA native HA and Backup.
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Yes (Red Hat Network)
Updates to the virtual machines are typically performed as in the physical environment, providing only limited capabilities. For Red Hat virtual machines updates can be downloaded from the Red Hat Network. For Windows virtual machines you would apply the relevant MS update mechanisms. There is no specific integrated function in RHV-M to update virtual machines or templates.
Centralized patching mechanism for Red Hat machines is possible via Satellite.
This is a Fee-based Add-On; Details - http://www.redhat.com/en/technologies/linux-platforms/satellite
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The XenCenter released with XenServer 7.0 allows updates to be applied to all versions of XenServer (commercial and free)
XenServer 7.1 introduced Live patching
NEW
With XenServer 7.0 patching and updating via the XenCenter management console (enabling automated GUI driven patch application and upgrades) is supported with the comercial and free XenServer versions.
XenServer 6 introduced the Rolling Pool Upgrade Wizard. The Wizard simplifies upgrades to XenServer 6.x by performing pre-checks with a step-by-step process that blocks unsupported upgrades. You can choose between automated or semi-automated, where automated can use a network based XenServer update repository (which you have to create) while semi-automated requires local install media. There are still manual steps required for both approaches and no scheduling functionality or online repository is integrated.
Indroduced in Xenserver 7.1, live patching enables customers to install some Linux kernel and Xen hypervisor hotfixes without having to reboot the hosts. Such hotfixes will consist of both a live patch, which will be applied to the memory of the host, as well as a hotfix that updates the files on disk. This reduces maintenance costs and downtime. When applying an update using XenCenter, the Install Update wizard checks whether the hosts need to be rebooted after the update is applied and displays the result on the Prechecks page. This enables customers to know the post-update tasks well in advance and schedule the application of hotfixes accordingly.
XenServer Live Patching is available for XenServer Enterprise Edition customers, or those who have access to XenServer through their XenApp/XenDesktop entitlement.
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Limited (Update Manager)
With vSphere 5 update manager discontinued patching of guest operating systems. It does however provide upgrades of VMware Tools, upgrades of the virtual machine hardware for virtual machines and upgrades of virtual appliances.
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