Backup on Tape: Error: Not appendable
We're backing up with BE 2012 on LTO5 Tape Drives. Since a few weeks, lots of Tapes are marked as "not appendable (End Marker unreadable)" (i hope thats the original Error message, we use the german version).
The error appears at different Tape brands (HP and Sony), the Firmware of the Tape library (Dell TL4000) is up to date. Do you have an idea what causes this problem?