HP Library and Tape Tools - Manual (Page 152)

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“How do I send an L&TT event log?” (page 152)
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“If backup/restore fails what I should do?” (page 152)
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“How LTT can help to identify the problems during backup/restore?” (page 152)
Was my backup successful (LTO only)?
To determine whether a backup to LTO tape was successful:
1.
Perform the backup as you normally would.
2. Generate a support ticket for the drive to which the backup was performed.
3. Locate the Loaded Tape > Cartridge Health section of the support ticket and examine the
margins. Also, check the following information:
•
Data on tape measures the quality of the data written on the tape.
•
Drive measurements measures the quality of the data as viewed by the drives that wrote
it.
If any of these parameters are suspect, you should repeat the backup using a different
drive/tape combination.
How fast will my backups be?
To determine backup performance, you must measure how fast the system reads from the disk
subsystem and writes to tape. Backup performance is no faster than the slowest of these two
measurements.
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Use the System Performance Backup Pre-test to measure the speed of the disk subsystem. See
Using the System Performance test (page 103) .
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Use the Drive Performance test to measure the speed of the tape drive. See Using the Drive
Performance test (page 94) .
How fast will my restores be?
To determine restore performance, you must measure how fast the system reads from tape and
writes to the disk subsystem. Restore performance is no faster than the slowest of these two
measurements.
Use the Device Performance test to measure the speed of the tape drive. Note that tape drives
write and read at the same speed. See
Using the Drive Performance test (page 94) .
Use the System Performance Restore Pre-test to measure the speed of the disk subsystem. See Using
the System Performance test (page 103) .
How do I send an L&TT event log?
Attach the event log along with the support ticket email option.
If backup/restore fails what I should do?
Run the Drive Assessment test and generate a support ticket.
How LTT can help to identify the problems during backup/restore?
Support ticket displays the health of the drive and tape. Running the tests help in identifying the
problem.
Media questions
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“Is my LTO tape OK?” (page 153)
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“Is my non-LTO tape OK?” (page 153)
152 Frequently asked questions