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Mailbox STore has nn megabytes after defrag.

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  • Mailbox STore has nn megabytes after defrag.

    Hello there...

    I'm reviewing my event log entries this morning (first chance I've had in a while) and noticed the following event entry:

    Event Type: Information
    Event Source: MSExchangeIS Mailbox Store
    Event Category: General
    Event ID: 1221
    Date: 19/03/2009
    Time: 3:30:33 AM
    User: N/A
    Computer: Giggle
    Description:
    The database "First Storage Group\Mailbox Store (Giggle)" has 1 megabytes of free space after online defragmentation has terminated.

    For more information, click http://www.microsoft.com/contentredirect.asp.
    2 months ago this was 165 megabytes of free space.

    Do I need to be concerned at all ? I'm definitely sure I have enough physical disk space for the drive the data stores are on, however I have inherited this setup, so it's possible that somewhere someone may have configured an upper limit to the database size, and if so can I do something about this ?


    This KBA http://support.microsoft.com/kb/186291 mentions something about needing to do an offline defragmentation, is this something we should be doing say monthly ?

    At the moment the system isn't live, however this is definitely something I need to get sorted before I can cut over..


    (Exchange 2003 Standard, SBS2003 SP2)
    Please do show your appreciation to those who assist you by leaving Rep Point https://www.petri.com/forums/core/im.../icon_beer.gif

  • #2
    Re: Mailbox STore has nn megabytes after defrag.

    I actually found this page after a bit more searching:

    http://www.experts-exchange.com/Soft..._21143134.html

    Which tells me that basically, everything is ok.. and if I ran an offline defrag, I'd regain 1MB in the datastore. So, I'll just not bother.

    I know that we haven't moved any mailboxes.. I do know a huge whack of data has been imported recently, and then a whole chunk of that archived and then deleted again.. but it seems that I should't be concerned.
    Please do show your appreciation to those who assist you by leaving Rep Point https://www.petri.com/forums/core/im.../icon_beer.gif

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    • #3
      Re: Mailbox STore has nn megabytes after defrag.

      No, you should not be concerned. The event is telling you how much white space is inside the physical edb file. This white space will shrink and grow dynamically as emails and attachments are added and deleted in user mailboxes. The important thing to monitor is that you have plenty of free space on the drive where the edb file exists and that the edb file does not exceed 100GB, which is Microsoft's recommended size limit. This is not a physical or technical limit, only that they recommend the edb file not exceed this size in order to maintain adequate performance, backup and restore windows, etc.

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