How it works...
When you protect a data source that resides on a primary DPM server, the secondary DPM server will query the primary DPM server VSS writer called DPM writer, which will create the replication process from the primary DPM server to the secondary, and finally store the recovery points on the backup storage volume on the secondary DPM sever. When you recover the protected data source from a secondary DPM server, the data will be recovered from its storage volume.
Additionally, one or more primary DPM servers can be protected by the secondary DPM server. This is important while implementing the offsite backup scenario. A DPM server could also be enabled for chaining, which means that it is both a primary and a secondary DPM server ...
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