%1 (%2) %3A request to write to the file “%4” at offset %5 for %6 bytes succeeded, but took an abnormally long time (%7 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: 8.0
Symbolic Name: OSFILE_WRITE_TOO_LONG_ID
Message: %1 (%2) %3A request to write to the file “%4” at offset %5 for %6 bytes succeeded, but took an abnormally long time (%7 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 Microsoft 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 and 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.

   
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. To resolve this Warning event, do one or more of the following:

  • 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 storage area network (SAN) device, make sure that the SAN has been configured correctly.

  • Review the Application log for related events. For example, events that occur immediately before and after this event may provide more information about the root cause of this warning.

If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.

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