Can anyone please explain the process behind exchange mailbox movement for me or if you guys guild me to any source that explains it. I have not found any solid source to able to explain that in details.
I have written a power shell tool that re balances the mailboxes across all databases since i have added new databases and dag members into our exchange organization as part of expansion. disk sizes are obviously exact same size, however, it seems that during the move it takes larger disk size then a steady mailbox would normally take. for example all databases need to have 339 mailboxes while before they were way above 400 one of the drives that the mailboxes moving to the database on that drive right now is about 90% space taken already, while the move is still in progress.
so if you guys can explain the move process and how it actually work in the background that will help me understand how many move should i initiate at a time and better understand provisioning of the disks. another issue is that this organization has disks provisioned thin