According to the tape drive backup system was broken at the moment the system backup is not available. If data corruption will no longer be able to recover the data back, it is necessary to buy a new tape drive replacement.
According to the tape drive for system backup of the backup system is currently unavailable if the damage can not be restored. So there is no need to buy a replacement tape drive.
As tape drive used in the system backup. Now system backup unavailable if the corrupted data will not be able to recover data back. Therefore, it is necessary to buy tape drive replacement.