The backup of Exchnage Server 2003 is still the same size despite moving mailboxes to Exchange 2007

Posted on 2008-10-29
Last Modified: 2010-04-21
Probably a simple question to an Exchange Server guru and this is not a problem as such - just puzzling
I introduced a new Exchange 2007 server a few months ago and since have done a phased move of all of my user inboxes over to it and everything is fine. However when I backup both servers I would have expected the older exchange 2003 server to be much smaller in size as it has no mailboxes stored on it anymore but it still shows 80GB backed up. I am using the latest Symantech Backup Exec Ver 12 so a little puzzled and is there anything I can do
Question by:SteveDunlin
LVL 33

Accepted Solution

Exchange_Geek earned 125 total points
ID: 22831601
Exchange backups information store EDB - STM Files never what is in it. Your store files will shrink only and only when you perform an offline defrag over it.

So, backup tape consists of edb + stm + log files (Not whats EDB+STM - white spaces in it)

Post offline defrag - your backup would be of the same size of the stores (a couple of MBs more if you have alot of log files being generated - common scene).

Hope this clears the doubt.

Author Closing Comment

ID: 31511095
I will look up the relevent Microsoft article and carry out an offline defrag - many thanks  Steve Dunlin

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