Proper Backup of Open Files Using Ntbackup (159218)
The information in this article applies to:
- Microsoft Windows NT Workstation 3.51
- Microsoft Windows NT Workstation 4.0
- Microsoft Windows NT Server 3.51
- Microsoft Windows NT Server 4.0
- Microsoft BackOffice Small Business Server 4.0
- Microsoft BackOffice Small Business Server 4.5
This article was previously published under Q159218 IMPORTANT: This article contains information about modifying the registry. Before you
modify the registry, make sure to back it up and make sure that you understand how to restore
the registry if a problem occurs. For information about how to back up, restore, and edit the
registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986 Description of the Microsoft Windows Registry
SYMPTOMS
Files may not be properly restored with a backup program (such as Windows
NT Backup).
CAUSE
This problem can be caused by either of the following:
- Corrupt file
Some third-party backup programs set the following value to 1 during
setup while Windows NT Backup sets this value to 0:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Ntbackup\Backup Engine\Backup files inuse
- Missing file
If the value above is set to 0, the backup program skips open files;
therefore, some files may be missing when you restore from backup.
RESOLUTIONWARNING: If you use Registry Editor incorrectly, you may cause serious problems that may
require you to reinstall your operating system. Microsoft cannot guarantee that you can solve
problems that result from using Registry Editor incorrectly. Use Registry Editor at your own
risk.
Perform one of the following to resolve this problem:
- Set the following value to 0:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Ntbackup\Backup Engine\Backup files inuse - Make sure a consistent file is available for backup before you start the backup. To do this, perform one of the following:
- Application method
Use a utility for that application file that creates a good backup while that file is open. For example, rdisk -s backs up the registry in the %SystemRoot%\Repair folder.
NOTE: When performing a remote backup of any server's registry, you must run rdisk -s or rdisk /s- on that server first because remote registries are not available to be backed up over the network. - System method
Close the files before backup (for example, stop logons, close current sessions with existing clients, and stop all non-essential services). You may be able to accomplish this by using the AT command or the Command Scheduler (Winat.exe). - Application and System method
The best approach may be to use both methods to make sure all data is accessible from a backup and to test your plan fully before implementing it.
| Modification Type: | Major | Last Reviewed: | 5/13/2003 |
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| Keywords: | kbhowto KB159218 |
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