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Chapter 7 Troubleshooting Guide
Problems During Backup/Restore Operations
72 LTO-2 Half-Height Tape Drive User’s Guide
1 The TapeAlert message or backup log shows, “The operation has
stopped because an error has occurred while reading or writing data which
the drive cannot correct.”
A media error occurred during write or read
operation on the tape drive. Review the troubleshooting procedures
to ensure that the proper SCSI cabling and termination practices are
being followed. Restart the backup if any changes are made to the
SCSI cabling or termination or if any cables or terminator are
unplugged then re-plugged.
This message may also be seen with,
“The tape is from a faulty batch or
the tape drive is faulty.” or “The tape is damaged or the drive is faulty. Call the
tape drive supplier helpline.”
If either of these messages also appears, use
a good tape to test the drive. If the problem persists, call the tape
drive supplier helpline.
2 Remove the data tape and insert a cleaning cartridge. After the
cleaning cartridge ejects reinsert the data tape and restart the backup.
If the backup succeeds, the problem is resolved.
3 If the backup fails, try to isolate the tape media vs. tape drive. Use
diagnostic software to perform a write/read test of 4GB of data. The
current data on the tape
WILL BE OVERWRITTEN AND ALL
PREVIOUSLY WRITTEN DATA ON THE TAPE WILL BE DESTROYED.
Use a second tape for the diagnostic test. If the diagnostic test passes
on the second tape, use the tape for the backup process and remove
the first tape from the backup process.
4 If the diagnostic test fails on the second tape, insert a cleaning tape
into the drive and repeat the diagnostic write/read test. If the
diagnostic test passes on the second tape, the problem is resolved.
5 If the diagnostic test fails on the second tape, the tape drive may be
bad. Use the diagnostic software to perform a write/read test on the
first data tape. The current data on the tape
WILL BE OVERWRITTEN.
ALL PREVIOUSLY WRITTEN DATA ON THE TAPE WILL BE
DESTROYED
. If the diagnostic test passes on the first tape, the
problem is resolved. If the diagnostic fails on the first tape, the tape is
bad and should not be used any longer.
6 If a second data tape is not available to test with the diagnostic
software, but a cleaning tape is available, insert the cleaning tape.
Remove the cleaning tape after the cleaning tape ejects and restart the
backup. If backup is successful, the tape drive and tape are
satisfactory.