need to set automatic overwriting of LTO tapes
i currently back up a number of folders on one of our servers (over 200GB of data) on a daily basis to LTO tapes (using HP C7972A 400GB tapes).
i have 10 tapes in total that are used in a 2 week rotation. what's happening is that i put a tape in for a nightly backup, and i come in the next day to see that the tape is ejected and another tape is required- i'm guessing because the tape being used is full.
my question- is there a way to have the backup jobs automatically overwrite the tapes so that the jobs don't require another tape to complete the job?
i thought i had this set up but now some days the backup will complete without prompting for another tape, but some will not- in both cases the tapes have data on them.
any help is greatly appreciated.
thanks for your time!