Microsoft KB Archive/253216

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XADM: Online Backup Does Not Detect Corruption on a Multiprocessor Computer if Buffer Size Is Larger than 64 Kilobytes

Article ID: 253216

Article Last Modified on 10/26/2006


  • Microsoft Exchange Server 5.5 Standard Edition

This article was previously published under Q253216


If you use a backup program on a multiprocessor computer that uses a buffer setting of more than 64 kilobytes (KB), the backup program does not detect a corrupted page during the online backup. The database is backed up successfully, even though it is corrupted.

The online backup program successfully detects the corrupted page on a single processor computer, regardless of the buffer setting.


To resolve this problem, obtain the latest service pack for Exchange Server 5.5. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

191014 XGEN: How to Obtain the latest Exchange Server 5.5 Service Pack


Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 4.

Keywords: kbhotfixserver kbqfe kbbug kbexchange550presp4fix kbexchange550sp4fix kbfix kbqfe KB253216