Product : Zerto, IT Resilience Platform/7.5, Enterprise
Feature : Deployment Architecture, Architecture, Design & Deploy
Content Owner:  Herman Rutten
Summary
On-premises:
1 Manager (ZVM) per site
1 Replication appliance (VRA) per host
1 Kernel module per host

Public cloud:
1 or more Cloud appliances (ZCA) per public cloud
Details
On-premises:
Zerto requires 1 Zerto Virtual Manager (ZVM) to be deployed at both the source and target sites. The ZVM components need to be installed on a (virtual) Windows Server.

Zerto also requires a Virtual Replication Appliance (VRA) as well as a kernel module (provided as vSphere Installation Bundle or VIB) to be deployed on each physical server that is part of a cluster hosting protected VMs (source site) and on each physical server that is used to process and store incoming replication data (target site). The kernel model is used for tapping into the VMs Input/Output (IO) stream.

Public cloud:
In Microsoft Azure and AWS one or more Zerto Cloud Appliances (ZCAs) need to be deployed. The ZCA is a combination of a ZVM and a VRA.

AWS: The ZCA must be installed on an AWS EC2 instance running the Windows Server OS. For Cloud Service Providers (CSPs) one ZCA is required per end customer.