I am currently setting up an environement in which I need to back up data at remote locations to a backup to disk appliance (Dell DR4100). The DR4100 appliances are local to each site. I must then replicate that data to another Dell DR4100 located at the primary site in order to perform aux copies of that data to tape. I will need to be able to employ a "many to one" replication strategy in that the primary location will have 5 mount points on the DR4100 each corresponding to the various remote sites. The DR4100 has native replication capabilities built into the appliance. If I setup a replicated libray in Commvault, will data be replicated at the hardware level ie between DR4100 appliances or will data be replicated via the Commvault software which will in turn send ALL backup data over the WAN? I really want Commvault to be able to use the native hardware replication features of the DR4100 as that will only send deduplicated data across the WAN, otherwise I may never be able to meet my SLA for replicating backups to my primary site.