Microsoft KB Archive/230215

= XADM: Backup Checksuming Not Performed on Single Processor Computers =

Article ID: 230215

Article Last Modified on 10/26/2006

-

APPLIES TO


 * Microsoft Exchange Server 5.5 Service Pack 2

-



This article was previously published under Q230215





SYMPTOMS
When you attempt to perform an online backup of the Microsoft Exchange directory and information store services on a single processor server, you do not receive any error messages indicating the database failed checksum verification during backup, and the backup process indicates it completed successfully.



RESOLUTION
To resolve this problem, obtain the latest service pack for Exchange Server version 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

The English version of this fix should have the following file attributes or later:

Component: JET



STATUS
Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5 Service Pack 2. This problem was first corrected in Exchange Server 5.5 Service Pack 3.



MORE INFORMATION
During the backup process, JET, the underlying database engine for Microsoft Exchange Server, performs a checksum verification of each page read from the database to ensure the health of the database being backed up. This issue indicates that it is possible on single processor computers for Windows NT Backup or other third-party backup utilities to inadvertently back up a corrupted database without warning or errors.

For additional information on the checksum process, please see the following article in the Microsoft Knowledge Base:

151789 XADM: Error -1018 (JET_errReadVerifyFailure)

For additional information on the backup process, please see the following articles in the Microsoft Knowledge Base:

179308 XADM: How To Verify Exchange Online Backups

182903 XADM: ESEUTIL Command Line Parameters

Keywords: kbbug kbfix kbqfe KB230215

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.