Our company just took over a new account. The disk that their exchange 2007 store is on has only 4GB left. I have convinced them to move to a hosted email solution, however, i would like to give us some cushion so nothing bad happens.
What I did (which I thought would clean up some space) was had two users with 20GB mailboxes archive half their mailbox. I set the deletion settings to 1 day and ran a backup. I checked the size of their mailboxes and they are under 10GB each yet I am not seeing this reduction in actual disk.
Googling this topic would consume my day. I just need to know any way to give me some cushion until we migrate them. There is no other disk with more than 40 GB of free space on the network.