How can I restore files from a tape created with NTBackup without a catalog of that backup?
Posted on 2014-01-30
I need to restore some data from tape that was previously backed up. NTBackup is both the program used for backup and restore.
In NTBackup, to perform a restore, you are required to select the files you wish to restore. The problem is there are no listed files to select, in effect, denying us the ability to restore.
Backups can be performed without error.
Restores can be performed without error (under the right conditions)
The pane that allows for the selection of files to restore in NTBackup is populated with files that have the extension V01 that reside in the "C:\Documents and Settings\All Users\Application Data\Microsoft\Windows NT\NTBackup\catalogs51" directory
*.V01 files are catalog files generated by backups via NTBackup
Restores can be tested by doing a restore immediately after doing a backup. The restore works as expected and the restore pane is populated with the previously done backup's file list.
NTBackup, on startup, is selectively deleting V01 (catalog) files. The V01 files being deleted are files generated via a "backup to tape" process. V01 files generated via a "backup to file container" process are retained when NTBackup starts.
Archiving and replaceing V01 files after NTBackup has started does not make the catalogs visible in the restore pane. Also, replacing the V01 files after NTBackup has shut down and before it is started again has the effect of the V01 files still being deleted.
At the moment all of our "assumed good" backups are useless as we can not restore files from them. The current operation of NTbackup is making it impossible. How can I get my files restored by either remedying the operation of NTbackup or by completely working around it?