Cannot overwrite/associate RDX cartridges
I've had an SBS2011 installation running Backup Exec 2012 running for 6 weeks now, backing up to an RD1000 drive (Dell server). Everything was brand new, the server, the software and the RDX drives. All has been running well up till this week when one of the backups started failing, complaining that the RDX was not overwritable. Looking at the All Media view, I can see that two of the RDXs have gone into a different media set (Backup Exec and Windows NT Backup Media) and have been put onto complete overwrite/append protection. This appears to have happened autonomously.
I've tried to associate the problem RDXs with the correct media set, but the option is greyed out. I've wiped them, re-inventoried and even formatted them in Windows, but nothing I do seems to "unlock" them. I've checked the physical lock switch on them hasn't been set, so now I'm stumped. I've even brought a brand new RDX, and as soon as it went into the server it went into the same status.
I've just applied SP1a, to no avail. Does anyone have any suggestions?