Exchange server 2003 Standard edition DB limit

Posted on 2009-12-16
Last Modified: 2012-05-08
Thanks for your previous suggestion. I need to clarify few things. As we discuss before E2K3 Standard Edition database size limit can be extend up to 75 GB altogether (.edb + .stm) files.

So my question:

Is it only for Mail box Store database size limit or Public folder store database size limit as well?

As Mail box store contain 2 database file (priv1.edb + priv1.stm). Same as
Public folder store contain 2 Database file(pub1.edb + pub1.stm).

So, 75 GB database size limit including Mail box store & Public folder store as well? Or individually Mail box database 75 GB & Public folder database 75 GB. If not then how can I add DWARD value in exchange server Standard edition registry up to 75 GB database limit into my Mail box store only? Which I already did. What about Public folder store? How can I find how much is left for Public folder store by default in this case as I already update Mail box store database limit to 75 GB?

Thanks for your co-operation.


Question by:Silense
    LVL 7

    Accepted Solution

    it's per each db

    Exchange Server 2003 Standard Edition   By default, the size limit of each database on a server running Exchange Server 2003 Standard Edition is 16 GB. After you install Exchange Server 2003 SP2, the default size limit for each Exchange database is 18 GB. Additionally, you can configure database size limits of up to 75 GB for each database on servers running Exchange Server 2003 SP2.

    Explaining the Database size limit changes in Exchange 2003

    You can configure a logical database size (logical size means the physical size of the .EDB and .STM  files minus the logical free space aka white space in each) limit for each Exchange database by creating a DWORD registry key named Database Size Limit in GB. This key should be created under the following location for the mailbox database and public folder database respectively:


    you can change the threshold at which you want to be notified by creating a registry DWORD key called Database Size Buffer in Percentage under the following locations (depending on whether we're talking about mailbox or public folder stores):

    LVL 52

    Expert Comment

    So, 75 GB database size limit including Mail box store & Public folder store as well? Or individually Mail box database 75 GB & Public folder database 75 GB -- this is correct both databases can go to an extend of 75GB.

    When you Dismount and Re-mount the Stores you would get a 1216 eventID and it will tell the Logical and the Max size it can go till .... rest all i think has been much explained ... if you still have any doubts or Queries do let us know
    LVL 7

    Expert Comment

    75 GB is the limit for public and private stores.  You have to set the registry keys individually for max size.
    LVL 7

    Expert Comment

    The limit is per database, no matter if it's a mailbox database or a public folder database. Exchange sees each database as a distinct, separated database.

    Author Closing Comment

    All good now Thanks.

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