Site Recovery Manager takes advantage of vCenter Server services, such as storage management, authentication, authorization, and guest customization. Site Recovery Manager also uses the standard set of vSphere administrative tools to manage these services.
Because the Site Recovery Manager Server depends on vCenter Server for some services, you must install and configure vCenter Server at a site before you install Site Recovery Manager.
You can use Site Recovery Manager and vSphere Replication with the vCenter Server Appliance or with a standard vCenter Server installation. You can have vCenter Server Appliance on one site and a standard vCenter Server installation on the other.
How Changes to vCenter Server Inventory Affect Site Recovery Manager
Because Site Recovery Manager protection groups apply to a subset of the vCenter Server inventory, changes to the protected inventory made by vCenter Server administrators and users can affect the integrity of Site Recovery Manager protection and recovery. Site Recovery Manager depends on the availability of certain objects, such as virtual machines, folders, resource pools, and networks, in the vCenter Server inventory at the protected and recovery sites. Deletion of resources such as folders or networks that are referenced by recovery plans can invalidate the plan. Renaming or relocating objects in the vCenter Server inventory does not affect Site Recovery Manager, unless it causes resources to become inaccessible during test or recovery.
In the case of VR, Site Recovery Manager can tolerate certain changes at the protected site without disruption.
Deleting protected virtual machines.
Deleting an object for which an inventory mapping exists.
Site Recovery Manager can tolerate certain changes at the recovery site without disruption.
Moving placeholder virtual machines to a different folder or resource pool.
Deleting an object for which an inventory map exists.
Site Recovery Manager and the vCenter Server Database
If you update the vCenter Server installation that Site Recovery Manager extends, do not reinitialize the vCenter Server database during the update. Site Recovery Manager stores identification information about all vCenter Server objects in the Site Recovery Manager database. If you reinitialize the vCenter Server database, the identification data that Site Recovery Manager has stored no longer matches identification information in the new vCenter Server instance and objects are not found.