Article ID: 104169 - View products that this article applies to.
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The Backup program (Ntbackup.exe) automatically skips the following types of files during the backup and restore processes:
Files That Are Locked by an Application Other Than BackupWindows supports the backup of local files that are exclusively locked by the operating system, such as event logs and registry files; however, another type of skipped file that Backup encounters is a file that is in use and locked by another process.
In this kind of event, Backup displays a "Skip Open Files Wait Time" dialog box. An internal timer is then started and Backup waits 30 seconds for the file to become available. During that time, Backup continuously tries to access the locked file. If the file does not become available during the 30-second waiting period, Backup skips the file, places its name in the backup log file (if the log is enabled), marks it as skipped in the log, and continues to the next file. You have the option to choose the Cancel button in the dialog box and immediately move to the next file, logging the skipped file as previously described. If the file becomes available before the 30-second time-out period, Backup backs up that file and continues with the rest of the backup.
If the file has an attached alternate data stream that is locked, Backup waits 30 seconds for the stream to become available. If the stream does not become available in that time, Backup makes an entry in the log (if enabled) that indicates that the file was corrupted.
You can modify the following registry entries to adjust the skipped files options.Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756NOTE: In the U.S. version of Windows NT version 3.1 Service Packs 2 (and later), NTBackup does not use the registry, but instead uses %SYSTEMROOT%\Ntbackup.ini.
(https://support.microsoft.com/kb/322756/ )How to back up and restore the registry in Windows
Name: Skip open files Type: REG_SZ Default: 0 Definition: 0 = do not skip, wait 1 = skip files that are opened unreadable 2 = wait on open files for "Wait time"
Name: Wait time Type: REG_SZ Data: 30 Definition: Maximum time (seconds) to wait for open files. Default is 30 seconds. Maximum value is 65535
Files That Are Skipped by Default by BackupBy default, Backup skips the following files:
Documents and Settings\User_name\Local Settings\Application Data\Microsoft\Windows NT\NTbackup\Data
Files that are skipped by default by Backup in Windows Server 2003The following files are not backed up by Backup in Windows Server 2003:
Article ID: 104169 - Last Review: December 3, 2007 - Revision: 7.6