After a period of time, (seems like several hours) BE reports that the tape drive is not online, this is a brand new tape loader.
Backup jobs to tape just end up being paused with Job Monitor reporting that the tape loader is ready, idle.
Even when I try and initialize the drive it still says it is idle.
I called out a Quantum engineer and he came on-site and tested the drive and can find no fault.
What could be causing this?