Site Recovery Manager can use vSphere Replication to replicate data to servers at the recovery site.

You deploy vSphere Replication as a virtual appliance. The vSphere Replication appliance contains two components.

A vSphere Replication management server:

Configures the vSphere Replication server on the recovery site.

Enables replication from the protected site.

Authenticates users and checks their permissions to perform vSphere Replication operations.

Manages and monitors the replication infrastructure.

A vSphere Replication server:

Listens for virtual machine updates from the vSphere Replication host agent on the protected site.

Applies the updates to the virtual disks on the recovery site.

If necessary, you can deploy multiple vSphere Replication servers on a site to balance the replication load across your virtual infrastructure.

For information about the loads that a vSphere Replication management server and a vSphere Replication server can support, see http://kb.vmware.com/kb/2034768.

vSphere Replication does not require storage arrays. The vSphere Replication storage replication source and target can be any storage device, including, but not limited to, storage arrays.

Site Recovery Manager Architecture with vSphere Replication
SRM architecture with vSphere Replication