Microsoft KB Archive/161201

= NTBackup.exe from WinNT 3.51 SP5 Causes Verify Errors =

Article ID: 161201

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 3.51
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 3.51
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q161201



SYMPTOMS
After installing Service Pack 5 on Windows NT 3.51, you may start to see verify errors in NTBackup. The errors you see, in either your NTbackup screen or Backup.log, will have the following format:


 * File information found on tape:


 * %FileName% %Size% %Date% %Time%


 * File information found on disk:


 * %FileName% %Size% %Date% %Time%


 * Difference encountered in alternate file data.


 * The file %FileName% is different.

The problem seems to occur more frequently on Macintosh or large NTFS volumes.



CAUSE
This is caused by NTBackup checking the stream size of the data which may change every time you run backup.



RESOLUTION
This problem seems to be more of a nuisance than actual file problems, but can cause NTBackup to degrade in performance, especially on large volumes. So far, we have not seen any cases which actually showed file corruption. You can simply choose not to verify after backup or apply the Hotfix available as mentioned below.



STATUS
Microsoft has confirmed this to be a problem in Windows NT version 4.0. This problem has been corrected in the latest U.S. Service Pack for Windows NT version 4.0. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Additional query words: prodnt Mac volumes verify macfile sfm

Keywords: KB161201

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