I am moving mailboxes from a 2007 server to our new 2013 server and they are taking days to move, and I have no idea why. I have tried everything on this forum (and googled it for days while I'm waiting) regarding settings on the DB (DataMoveReplicationConstraint setting), making sure I am not replicating to another DB while migrating ect. For example we have some <100MB mailboxes that take 4 hours to complete. Other than the speed everything else seems fine, once moved everything works. I have even tried moving a few mailboxes to a new DB on the 2007 think perhaps the original DB has some corruption, but then moving those mailboxes was no faster either. both servers are on the same gigabit network sitting right next to each other. Any ideas would be much appreciated.
Thanks