Wrong advice: Reseeding is not defragmenting
I once visited a trainig course for Microsoft Exchange where the teacher said that you can defrag an Exchange database by simpling removing a DAG copy and then reseed it. This sounded much better than offline defrag, where you have to take the database offline.
It sounds logical, but it doesn't work. I tried it using a database that has no mailboxes anymore (I previously used that database for a forest migration),
Get-MailboxDatabase showed that there was a lot of free space (
AvailableNewMailboxSpace). I reseeded the database using
Update-MailboxDatabaseCopy. But the reseeded copy had the same size as the original.
Nice idea, but it doesn't work.
Published on 2022-12-13, 20:39 +0000