We've run into a situation where our Exchange database has consumed almost all of the disk it is on. Our Exchange 2007 is in an SBS 2008 environment and hosted on an ESXi server. We have additional available disk space to provision to create an additional virtual disk but we are limited to 256GB per disk. The current database is 180GB with about 10GB of space free. There is one mailbox that we plan on removing shortly that is taking up nearly 50GB (too much, I know).
Since ESXi does not support USB passthrough storage, we are limited in our options. Ideally, we would prefer to leave mailboxes in the current Exchange DB and somehow defrag it to remove the whitespace after removing the one offending mailbox. What's the best way to reclaim space in this situation?
We've considered moving mailboxes to an additional mail store (still not sure how to shrink the original)
Possibly spanning to another virtual disk to increase space for a defrag (not sure if this will work without harming the exiting data on this volume).