• Each Resource Group vCenter Server is coupled with vSphere Replication Manager, which is provided as a virtual appliance. vSphere Replication Manager must be registered in the same vSphere domain as the vCloud Director Platform Services Controller. It is protected with vSphere HA.

• Multiple vSphere Replication servers are deployed for each vSphere Replication Manager Server. They receive the replication streams from the tunnel provided by cloud proxies and upload the data to ESXi hosts. They are deployed in scale-out fashion based on number of replicated virtual machines.