I've not used DPM a lot (2012 installed here) but I have done brick-level
restores with it.
For some reason in this environment when I select a single mailbox it acts like
it's going to restore just the one mailbox but in fact restores the whole
database that holds the mailbox. To be clear:
In DPM console go to Recovery: Search (open the leaf) Exchange Mailboxes. Use
the dialogs at the top to find the one I want, then rclick, select "Recover"
and follow the wizard.
Recovery type: Recover mailbox to an Exchange server database
Exchange server name is correct (selected from the Browse) as is the DB (a RDB
created with PS).
The mailbox I'm using is my own and on that date was about 12M. The recovery
fails with "inadequate disk space" on a 400G drive. Uh.... what? I didn't set
up the backup jobs; is there something that has to be configured there?