Microsoft KB Archive/104081
Command Line NTBackup Won't Backup Files Using UNC Naming
The information in this article applies to:
- Microsoft Windows NT Server versions 3.1, 3.5, 4.0
- Microsoft Windows NT Workstation versions 3.1, 3.5, 4.0
- Microsoft Windows NT Advanced Server, version 3.1
Windows NT Backup (NTBACKUP.EXE) does not support uniform naming convention (UNC) naming for paths. For example, when issuing the command
ntbackup backup \\server1\share\<dirname>
Windows NT Backup will not backup any files in the specified directory, even though files exist in the directory (\<dirname>).
This might be an issue for someone (such as a network administrator) who wants to make nightly backups using the AT command (which schedules programs to run on a computer at a specified time and date).
For example, you may want to issue the following command
AT 3:30am backup.bat
where the contents of the BACKUP.BAT file are the following:
ntbackup backup \\server1\share\sys
When you are using UNC naming conventions, you can avoid mapping a drive letter to a network resource; however, Windows NT Backup does not support UNC naming.
In the above example, then, the correct contents for the BACKUP.BAT is the following:
rem Disconnect the current network resource if it exists. net use o: /d rem Connect to the correct network resource for the backup. net use o: \\server1\share rem Run the backup to the network resource. ntbackup backup o:\sys rem Disconnect the current network resource. net use o: /d
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Last Reviewed: October 27, 2000