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Zerto Installation Guide for Microsoft Hyper-V Environments

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Installing Virtual Replication Appliances

The Zerto Virtual Replication installation includes the installation package for Virtual Replication Appliances (VRAs).

A VRA is a Zerto Virtual Replication virtual machine that manages the replication of virtual machines across sites.

A VRA must be installed on every host.
The VRA compresses the data that is passed across the WAN from the protected site to the recovery site.
The VRA automatically adjusts the compression level according to CPU usage, including totally disabling it if needed.
A VRA can manage a maximum of 1500 volumes, whether these volumes are being protected or recovered.
The VRA is a custom, very thin, Linux-based virtual machine with a small footprint, disk – memory and CPU – and increased security since there are a minimum number of services installed.
Zerto recommends installing a VRA on every hypervisor host so that if protected virtual machines are moved from one host in the cluster to another host in the cluster there is always a VRA to protect the moved virtual machines.
(Hyper-V only) When running Hyper-V hosts on 2012 R2, verify that User Account Control: Run all administrators in Admin Approval Mode security policy setting is set to Disabled. This can be found in the path:

Computer Configuration\Policies\Windows Settings\Security Settings\Local Policies\Security Options\User Account Control

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