During a recent recovery we started seeing conflict folders appear while using Restore-Mailbox PS command. For every folder that was restored, 4 identical folders appears with the same name and then "Conflict (########)" post fixed on the end. The #### is a variable hex number This effectively restored 5X the space. I am not sure at what point the conflict folders were created. They were not in the users mailbox to begin with and I restored the folders to a recovery folder in their mailbox rather than merging with original folders. We use Legato to backup our databases. Is this the Restore-Mailbox creating the duplicate folders or is it likely they already exist in the recovery database from Legato? Thank you! Karl

I haven't seen this happen with natibe WIndows backup/restore, it could well be the existing DB, but from what I remember it tells you that a DB already exists. What I suggest you do, is create a new RSG and do the whole restore again and test.Sukh