MS Exchange running out of disk space

P3admin
P3admin used Ask the Experts™
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Hi
Im looking at upgrading our server infrastructure soon but the big kahoonas have put a hold on spending for now so I have to do with what we got. The problems is that our Exchange server is running out of space and currently we have 765mb spare when recommended is at least 1gb. What issues will we start to see if this continues? I have cleared out as much space as possible but there isnt much more I can do. Have asked users to move most of their emails to .pst to help resolve also. Resizing the partition could make the systems unstable? Any ideas greatly appreciated
Cheers
Troy
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Commented:
You do NOT want your Exchange IS volume to run out of disk space.  Best case it will dismount, worst case it will become corrupt.

Do you have a backup in place that clears the transaction logs?

Do you have another volume you could move the databases to?  Or your pagefile?

Use treesize free to see where you might have other space you can reclaim.

http://www.jam-software.com/freeware/index.shtml
Alan HardistyCo-Owner
Top Expert 2011
Commented:
If you are running out of space, even asking the users to export data to .PST files won't shrink the store size as the data, once it has gone past the store retention period will only be marked as white space in the store and will get re-used.
The Exchange store size will never shrink without a manual defragmentation which means dismounting the store and running eseutil /d on the store.
This can take a long time to perform if your store is large and runs at about 4Gb - 6Gb per hour and you need 110% of the store size in free disk space to run, unless you specify to place the temporary files on another drive with sufficient space.
http://www.msexchange.org/tutorials/Defragmenting-Exchange-Database.html 

Author

Commented:
Is it possible to move the mailbox store to another partition such as the D drive without it effecting anything after hours? its currently on the C drive. I have inherited a system that is in dire need of an upgrade but unfortunately this is what I have to work with at this moment :(
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Commented:
adam1115 is 100% dead on.

your best bet is to move the store.
to do that you need to take the exchange server off line for a bit.
Be prepared for several hours if not 12hrs to move the store depending on how large it is.

here is a step by step on how to do that. (with pictures)
http://www.petri.co.il/move_exchange_stores_to_a_different_disk.htm
Commented:
oh.. once you start the move, do not stop it or interrupt it.
also have a backup.
How to backup : http://www.petri.co.il/backup_exchange_2000_2003_with_ntbackup.htm

Author

Commented:
Hi guys
Thanks all for your help and advice. Am doing a backup now and will move the mailstore hopefully over night tonight. Unfortunately there is no access to the building after hours or on the weekends but its not that big a database so hopefully shouldnt take too long. Ill let you guys know how I go
Cheers
Troy
Commented:
one i moved was 7gb and took about 2hrs. FYI.

Author

Commented:
Thanks dauman. Ours isnt much bigger so hopefully not too much longer than that :)
noxchoIT Product Manager
Top Expert 2009
Commented:
Hello, you asked: Resizing the partition could make the systems unstable?
The answer is No. It will not make it unstable.
What is your current configuration? Can you post here a Windows Disk Management screen shot?

Author

Commented:
Hey guys
Have moved the log files and database but now am not able to send and receive emails. Any advice greatly appreciated. Have got an error in event ID 9519 Source MSExchangeIS
Cheers
Troy
Commented:
Event 9519  says it is having problems opening the mail store.

Start Exchange System Manager.
Locate the Administrative Group. Under the Storage Group, click the Mailbox or Public Folder Store that you want to change.
Open the properties on that store, and click the Database tab.

Make sure the database path reflects the new location.

go to services located under administrative tools and try to restart the Exchange database store.



reference: http://www.petri.co.il/move_exchange_stores_to_a_different_disk.htm#

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