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Mid-Tier Storage warning message (EXCH2010)

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  • Mid-Tier Storage warning message (EXCH2010)

    This is showing up in our event log and after some searching, I have no idea how to troubleshoot this. I tried various searches on Google but the best I found was that it might be a mailbox with over 100,000 deleted items or something. and I did find two boxes where is looks like folks never "empty" their deleted items but I am not sure that is a fix for this this issue.


    Log Name:      Application
    Source:        MSExchange Mid-Tier Storage
    Date:          12/6/2012 1:02:03 PM
    Event ID:      5001
    Task Category: CopyOnWrite
    Level:         Warning
    Keywords:      Classic
    User:          N/A
    Computer:      server.local
    Multiple errors occurred while saving items for mailbox ''. The error was encountered 51 times on this session with the client information: .
    Event Xml:
    <Event xmlns="">
        <Provider Name="MSExchange Mid-Tier Storage" />
        <EventID Qualifiers="32768">5001</EventID>
        <TimeCreated SystemTime="2012-12-06T21:02:03.000000000Z" />
        <Security />

  • #2
    Re: Mid-Tier Storage warning message (EXCH2010)

    For anyone else that runs into this condition. I talked with Microsoft support and this warning by itself can be ignored. The time to contact them is when it is coupled with an error in the event or system log(s).



    • #3
      Re: Mid-Tier Storage warning message (EXCH2010)

      Thanks for posting back!
      Did they by any chance say which error (or is it "any error")?
      Tom Jones
      MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
      PhD, MSc, FIAP, MIITT
      IT Trainer / Consultant
      Ossian Ltd

      ** Remember to give credit where credit is due and leave reputation points where appropriate **


      • #4
        Re: Mid-Tier Storage warning message (EXCH2010)

        Originally posted by Ossian View Post
        Thanks for posting back!
        Did they by any chance say which error (or is it "any error")?
        not really, I think disk events were mentioned and is it not in their case notes that I have access to. I am assuming it will be a "You'll know it when you see it" kind of thing.