Dear

I am using the Power Vault 120T tape loader and ARCserve to backup server data.
My company power supply was down last week. The Power Vault 120T tape loader was shutdown!

Then I start the tape loader again. The ARCserve show all my tapes are unreadable and cannot format the tape! I try to change a new tape the the tape loader. ARCserve can read the new tape.

I want to use the tapes again! Have any software can coerce to format the tapes?
OR
The tapes cannot use again?