I'm having problems backing up a Hyper-V virtualized Exchange 2007 server with DPM 2012. The guest has one VHD for the OS, and two pass-through volumes, one for logs and one for the databases. I have three protection groups:
- System State - protects only the system state of the mail server, runs at 4AM every morning
- Exchange Databases - protects the Exchange stores, 15 minute syncs with an express full at 6:30PM every day
- VM - Protecting the server hosting the Exchange VM. Does an child partition snapshot backup of the Exchange server guest with an express full at 9:30PM every day
The problem I'm experiencing is that every time the VM express full completes I start receiving errors on the Exchange Database synchronizations stating that a log file discontinuity was detected. I did some poking around in the logs on the Exchange server and sure enough, it looks like the child partition snapshot backup is causing Exchange to truncate the log files even though the logs and databases are on pass-through disks and aren't covered by the child partition snapshot.
What is the correct way to back up an entire virtualized Exchange server, system state, databases, OS drive and all?