I'm looking for a way to not have any user interaction with the exception of exchanging the tapes. The problem that we are running into now is that after a tape has been used once and then put in the next week, the backup fails because Ntbackup can't find any free media. We reuse the daily differential tapes every week, but have two tapes for the full backups -- that way we always have a full backup on hand. The only workaround that I have found is to manually de-allocate, then prepare the tape. Any suggestions?
- I do a full, normal backup using Ntbackup.
- On a used tape, I manually do a differential backup, replacing the contents of the entire tape. Ntbackup confirms that I want to erase the tape's contents.
- I schedule a job to do a differential backup each day, appending the contents to the existing tape.
- If I have to replace the tape, I repeat steps 2 and 3.
This was first published in October 2002