Exchange Mail Store - HELP!

JiffyZ
JiffyZ used Ask the Experts™
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We currently have a mail store that is around 62gb in size.  It is my understanding that this can be increased to 75gb through registry changes.  At present it is dismounting regularly. A few questions I could really use answers too....

1.  How do I see the Mail store?  Where can I access the mail store, see the options that I can apply to it.  Where is this information located in Exchange?

2.  What is the best way to decrease the size?  Archiving?  Can this be automated/enforced/required of our users?

3.  What else should I know when deciding on how to deal with this problem?

Your help is very appreciated!  Thanks in advance!

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Commented:
To see if your information store is dismounting because of a size limit check the application log on your Exchange Server for the following:

Event Type: Error
Event Source: MSExchangeIS
Event Category: General
Event ID: 1112
Description: The database "Mailbox Store (Server Name)" has reached the maximum allowed size. Attempting to unmount the database.

Event Type: Warning
Event Source: ESE
Event Category: Space Management
Event ID: 445
Description: Information Store (3160) The database D:\Program Files\Exchsrvr\MDBDATA\priv1.edb has reached its maximum size of 16383 MB. If the database cannot be restarted, an offline defragmentation may be performed to reduce its size.

If this is the case then Services Pack 2 can be applied for Exchange Server 2003 from here: http://www.microsoft.com/DOWNLOADS/details.aspx?familyid=535BEF85-3096-45F8-AA43-60F1F58B3C40&displaylang=en

If you are running Small Business Server 2003 then you need to ensure that you have SP2 for Exchange along with SP2 for Windows and SP1 for SBS: http://www.microsoft.com/windowsserver2003/sbs/downloads/sp1/default.mspx

Once you are running SP2 for Exchange you can increase the size of your Information Store Limit but following this article: http://support.microsoft.com/kb/912375 upto a maximum of 75GB

When it comes to decreasing the size the best thing is to set limits on your users mailboxes so that they cannot go above a certain size.  You can do this a couple of ways by setting an information store limit in exchange located in Exchange System Manager > Administrative Groups > First Administrative Group > Servers > Server Name and  right clicking on the information store you want to change.  You can also set individual limits on the Exchange Advanced tab of the properties of the user object in active directory.

Once you have set limits and archived anything over those limits you will need to recover the space using ESEUTIL to defrag the database, a great article can be found here: http://www.msexchange.org/tutorials/Exchange-ISINTEG-ESEUTIL.html

I think that covers all your questions, if you require any further help please let us know.

Author

Commented:
Really awesome answer.. TY..

Is there anyway I can SEE the information store.  Its size, the options.. etc?  

The store is indeed dismonting, I have seen the error messages in the logs, that is no doubt the problem.. however I would still really like to be able to see the store.. its size etc.

Thanks!
Awarded 2009
Top Expert 2010

Commented:
If you mean see the actual files then the exact location of the files can be found by right clicking on the mailbox store as described in the post above and this will tell you the physical location of the store.

Is that what you are after?
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Awarded 2009
Top Expert 2010

Commented:
Also gave a read of thus document it may well answer some if your queries.
http://www.msexchange.org/articles/Understanding-Exchange-Information-Store.html
The location of the mailstore is on one of the main drives c: d: e:...
C:\Program Files\Exchsrvr\MDBDATA\priv1.edb
C:\Program Files\Exchsrvr\MDBDATA\pub1.edb

Add both file sizes up to get the mailstore size.
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Top Expert 2010

Commented:
The two files listed above are separAte stores.  This size is determined by adding the size of the edb file and the STM file.
Yes you are correct. Sorry for the typo.
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Commented:
The actual location can be determined by looking at the properties of the store as described in my first post.  They may not be in the default locations.
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Commented:
It would normally be priv1.edb and priv1.STM
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Commented:
The size of the store for the purposes of the dismount is the combination of the two PHYSICAL files, minus the amount of white space reported by event ID 1221.
The only reliable count is the one that is being reported by the registry entry each day.

Simon.
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Top Expert 2010

Commented:
Exactly, all I was trying to point out was that it definately was not the total of both the EDB files.

Author

Commented:
Outstanding!

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