HP BACKCOPY Reference Manual page 259

Cause. The first I/O operation attempted on a tape encountered a file-system error.
Effect. BACKUP rewinds and unloads the tape and prompts for a tape.
Recovery. For corrective action for the error number n, see the Guardian Procedure Errors and
Messages Manual.
8120
Labeled tape mounted for input is a scratch tape.
Cause. A tape that has been labeled or relabeled and has no data was mounted for reading.
Effect. RESTORE rewinds and unloads the tape and prompts for another tape.
Recovery. Mount the correct tape.
8121
Tape parity errors and/or tape record checksum errors were
found on the beginning volume labels.
Cause. Parity errors, checksum errors, or both occurred on the beginning volume labels. Parity and
checksum errors might result because the beginning of a tape is worn out or a tape drive is dirty.
Effect. RESTORE rewinds and unloads the tape and prompts for a tape.
Recovery. If the drive used has a manual density switch, make sure that it is set to the correct density
and try again. If the problem persists, see the cause and recovery for error
8122
Tape parity error(s) and/or tape record checksum error(s)
occurred on the beginning volume labels. Error recovery was
able to recognize the tape.
Cause. Parity or checksum errors occurred on some of the beginning volume labels. Parity and
checksum errors might result because the beginning of a tape is worn out or a tape drive is dirty.
Effect. RESTORE continues. Because duplicate volume labels were written, error recovery was able
to recognize the tape usage of the unaffected volume labels.
Recovery. After RESTORE is finished, investigate the tape and the tape drive.
8123
An EOF mark was found where begin volume labels were
expected.
Cause. An invalid tape format was discovered.
Effect. RESTORE rewinds and unloads the tape and prompts for a tape.
Recovery. Check the tape and remount it. If the problem persists, see the cause and recovery
sections for error
8126
Attempt to open a labeled tape failed due to error number.
Evaluate the error and remount the same/different tape on the
same/different tape drive.
8025 (page 237).
8025 (page 237).
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