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- DOCUMENT:Q104169 06-OCT-1993 [W_NT]
- TITLE :Files Skipped with Windows NT Backup
- PRODUCT :Windows NT
- PROD/VER:3.10
- OPER/SYS:WINDOWS
- KEYWORDS:
-
- --------------------------------------------------------------------
- The information in this article applies to:
-
- - Microsoft Windows NT operating system version 3.1
- - Microsoft Windows NT Advanced Server version 3.1
- --------------------------------------------------------------------
-
- WARNING: Using Registry Editor incorrectly can cause serious,
- system-wide problems that may require you to reinstall Windows NT to
- correct them. Microsoft cannot guarantee that any problems resulting
- from the use of Registry Editor can be solved. Use this tool at your
- own risk.
-
- SUMMARY
- =======
-
- The Windows NT Backup program (NTBACKUP.EXE) automatically skips the
- following types of files during the backup and restore processes:
-
- - Files that are locked by another application other than Windows NT
- Backup
-
- -and-
-
- - Files that are skipped by default by Windows NT Backup
-
- MORE INFORMATION
- ================
-
- Files That Are Locked by Another Application
- Other Than Windows NT Backup
- --------------------------------------------
-
- Windows NT 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 Windows NT Backup
- encounters is that which is in use and locked by another process.
-
- In this kind of event, Windows NT Backup displays a "Skip Open Files
- Wait Time" dialog box. An internal timer is then started and Windows
- NT Backup waits 30 seconds for the file to become available. During
- that time, Windows NT Backup continuously attempts to access the
- locked file. If the file does not become available during the
- 30-second waiting period, Windows NT 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, Windows NT 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,
- Windows NT waits 30 seconds for the stream to become available. If the
- stream does not become available in that time, Windows NT Backup makes
- an entry in the log (if enabled) indicating that the file was corrupt.
-
- You can modify the following registry entries to adjust the skipped
- files options:
-
- HKey_current_user\Software\Microsoft\Ntbackup\User Interface
-
- 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 Windows NT Backup
- ------------------------------------------------------
-
- - Files you do not have permission to read. Only those with backup
- rights can copy files they do not own in Windows NT Backup.
-
- - Files that are temporary in nature--such as PAGEFILE.SYS,
- WIN386.SWP, 386SPART.PAR, BACKUP.LOG, and RESTORE.LOG--are neither
- backed up nor restored by Windows NT Backup. The list of skipped files
- is hard-coded into Windows NT Backup and cannot be changed.
-
- - Registry files on remote computers. Windows NT backs up only local
- registry files.
-
- Additional reference words: 3.10
- KBCategory:
- KBSubCategory: 32ap
-
- =============================================================================
-
- THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
- PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS
- ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
- OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO
- EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
- ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
- CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
- MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
- POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION
- OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
- SO THE FOREGOING LIMITATION MAY NOT APPLY.
-
- Copyright Microsoft Corporation 1993.