We have the following setup:
Exchange 2010 DAG with 4 mailbox servers. One DPM 2012 server with a Dell tape library and 4 drives.
4 mailbox databases, DB1 through DB4
One active copy and two passive copies of each mailbox database, each database copy on a separate server.
DPM Protection group is set to make a Full backup of the active database, and copy backups of the passive databases.
Here are my questions:
1. Should I be backing up the active databases Full, or should I set up a passive database for Full backup?
2. Why does DPM take a Full Tape backup of every database copy, and how can I change that?
2. Why does DPM 2012 show everything is o.k when a "Get database backup status" Powershell script that I run on an Exchange mailbox server tells me one database hasn't been backed up in over a week?