name (id) nameA request to write to the file “file name” at offset number for number bytes succeeded, but took an abnormally long time (number seconds) to be serviced by the OS. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem.

Details
Product: Exchange
Event ID: 508
Source: ESE
Version: 6.5.6940.0
Component: Microsoft Exchange Extensible Storage Engine
Message: name (id) nameA request to write to the file “file name” at offset number for number bytes succeeded, but took an abnormally long time (number seconds) to be serviced by the OS. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem.
   
Explanation

This Warning event is logged when the Exchange database engine tries to write to the named file and encounters a delayed response from the operating system in performing that write operation. This is a warning, not an error, because the operation eventually finishes, although it is slow. This might indicate a hardware problem, probably with the disk controller, a disk, or other storage component.

Besides the 508 Warning event, the following other related events may provide more information about the root cause of this issue:

    Event 507: Information Store (3788) %1: A request to read from the file %2 at offset %3 for %4 bytes succeeded, but took an abnormally long time (%5 seconds) to be serviced by the OS. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem.

    Event 509: Information Store (3776) %1: A request to read from the file %2 at offset %3 for %4 bytes succeeded, but took an abnormally long time (%5 seconds) to be serviced by the OS. In addition, %6 other I/O requests to this file have also taken an abnormally long time to be serviced since the last message regarding this problem was posted %7 seconds ago. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem.

    Event ID 510: Information Store (3788) %1: A request to write to the file %2 at offset %3 for %4 bytes succeeded, but took an abnormally long time (%5 seconds) to be serviced by the OS. In addition, %6 other I/O requests to this file have also taken an abnormally long time to be serviced since the last message regarding this problem was posted %7 seconds ago. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem.

   
User Action

Because this event typically indicates a problem with your disk subsystem or other server hardware, you should carefully examine the performance of the hardware in your Exchange server environment.

If available, run hardware diagnostics provided by the server manufacturer. If there are specific tests available to test the disk subsystem, run those tests also. Running these hardware tests may help you discover the cause of the performance bottleneck. If the server uses a SAN device, make sure that the SAN has been configured correctly.

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