I’ve recently inherited the care and feeding of the Exchange servers in our company and have a problem with the First Storage Group on one of the servers. The FSG contains only one user mailbox plus SMTP, SystemAttendant and SystemMailbox and has grown to a very large size (over 150GB). I want to migrate the existing user mailbox to another server and do an offline defrag, but I only have 8GB unused hard drive space available.
Is it possible to do this? If not, can I migrate the system mailboxes to another storage group, delete the FSG and migrate the user back to another storage group on the box?
Any and all help would be appreciated!!