What is the best way to determine total whitespace?Event 1221 is 4741 MB. Can you take the total of the mailbox sizes from MS Exchange System manager and subtract that from the total of .edb and .stm?I know you can run esuetil /ms, but I would like to avoid taking the store offline if possible.Thanks.

Dave, you have the answer...Event 1221 is the "easiest way"...in your question the particular mailbox store you read the event 1221 from has 4741 MB of "whitespace" so if you were to offline defrag the store that would be how much space you will reduce the database size by...really no need to do anything else....

I thought Event 1221 will only calculate white space in .edb and not in .stm?

More often than not Event 1221 will give you a pretty good idea of how much whitespace is there in the mailbox store; if you REALLY wish to see how much you have in your .stm file you have no choice but to run eseutli /ms be aware that the value shown there under WS for the STM file will be in KB so you will need to multiply by 1024 to get the MB, as I said before, it is really pointless even more so if the amount shown in event 1221 is enough to allow for offline defrag.

Yes I agree with Halvarez2000 you dont have to bother about stm coz when you do offline defrag you have to do it on edb not on stm and offline defrag takes care of reclaiming the white space from both database.Vinod |CCNA|MCSE 2003 +Messaging|MCTS|ITIL V3|

Determining the True Amount of Space in an Exchange Databasehttp://technet.microsoft.com/en-us/library/aa996139(EXCHG.65).aspxRegards,Xiu