Exchange 2010 Hyper-V Guest Backup (Host Level Snapshot & separate backup of DAG DBs) - Is this OK?
Posted on 2012-08-22
I'm really hoping we have some good Hyper-V / Exchange 2010 / Data Protection Manager 2010 experts out there that can assist with this question!
I have the 2 Hyper-V host systems (Win 2008 R2) and each has 2 Exchange 2010 guest VMs (a CAS/HT and a Mailbox). I have the Mailbox Servers in a Database Availability Group which spans the 2 Hyper-V hosts. For simplicity, here is breakdown:
- VM#1 = CASHT1
- VM#2 = MAILBOX1 (member of DAG)
- VM#1 = CASHT2
- VM#2 = MAILBOX2 (member of DAG)
I've installed the DPM agent on both Hyper-V hosts (plus the 2 VMs in each host).
When I created my first Protection Group, I had it just backup the DAG, selecting all DBs on MAILBOX1 (the active) as full backup and all DBs on MAILBOX2 (the passive) as COPY. That seems to be working well.
The tricky part is I want to also backup the actual MAILBOX1 and MAILBOX2 VMs, not just the Information Store (mailbox DBs) they have in them.
QUESTION - Should I backup the MAILBOX1 and MAILBOX2 VMs at the host level or guest level?
I'd like to do it at host level, but:
1. I am worried that a "snapshot of child partition" backup that will be done at host level may mess up my Exchange DBs and Logs.
2. I'd like to omit drive D: (DBS) and drive E: (Logs) from the MAILBOX1 and MAILBOX2 backup since I'm already backing them up via the DAG. The host level backup does not appear to let you omit certain drives. Otherwise, I'm doubling my backup space usage because I'll be backing up the databases twice (once via host's snapshot of child and once via DAG backup).