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Shrink Datastores on Exchange 2007

Posted on 2014-03-10
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Last Modified: 2014-03-10
Good Morning Experts,

I have a question, possibly two.

We have a previous exchange server 2007 still on the domain and are running with 2010.  All mail is now routing through Exchange 2010 and 2007 is ready to be decommissioned.  Both Exchange 2007 and Exchange 2010 are virtual using NetApp ISCI Storage.

The decision was made to not decommission it until after this semester (we are a school) because we were told by Back up Exec that if any mail needed to be retrieved that was created on one of the Exchange 2007 datastores, we would need an exchange 2007 server to retrieve that mail.  

My question is, the datastores are almost 300 gigs big sitting on a thin provisioned disk.  can I shrink them down without hurting anything?  I have removed all mailboxes, there are 3 total with nothing on them.  I need the storage prior to the decommission of this box.

I hope that made sense.  thank you for your time.
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Question by:klsphotos
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by:robocat
robocat earned 500 total points
ID: 39917642
If the exchange volumes are empty, the risk should be very low.  Use snapdrive (if you've got it) to shrink the volumes.

But why shrink and not delete if they are empty anyway?
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Author Comment

by:klsphotos
ID: 39918103
I was told that they would need to be recreated if we needed to restore mail to them from Back Up exec so I figured I would leave them but shrink them.  Is there harm in deleting them?  Everything is off...
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Expert Comment

by:robocat
ID: 39918545
OK, I get it, restored mails need to be in the original locations (databases), so it makes sense to shrink the database volumes instead of deleting them.
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Author Comment

by:klsphotos
ID: 39918697
Hello and thank you for responding.

I don't think I am communicating the issue properly so my apologies.

Our old exchange server still shows it is using 75% of the disks.  I have moved everything off if it but the disk size hasn't changed.  Isn't there something in exchange to reclaim the space and decrease the database size?  It hasn't changed at all (white space has) since the migration of all mailboxes to the new server.  Until I do that, I can't shrink the disk to less than what these databases are still using?

I hope that made sense, thanks again.  I did just check out Snap Drive...that looks awesome!
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Accepted Solution

by:
robocat earned 500 total points
ID: 39919120
Deleting mailboxes will not free database space by itself. Defragmenting will compact the database:

http://technet.microsoft.com/en-us/library/aa998863%28v=exchg.80%29.aspx
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Author Closing Comment

by:klsphotos
ID: 39919172
Thank you everyone!
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