Please diaganose as why the jobs are failing or check if the DRIVE and TAPES are having some issues.
BECAUSE
The bad thing about WORM MEDIA is the serious nature of its use as an archival media. Once the data is written to the tapes, the only way to "erase" it is to destroy the tape physically.
So please try to figure out why the jobs are failing and diagnose the reason behind it as there can't be anything done for the WORM media