HP StoreEver TapeAssure Software - Manual (Page 31)

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Amount of data written compared to the amount attempted.
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Amount of tape used to write the data.
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Channel variation — a percentage comparison across all the heads (16 or 32 depending on
the drive technology)
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Channel variation margin — normalizes the channel variation to between 0% and 100% such
that greater than 0% is acceptable (a pass) and 100% is no variation at all.
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Offtrack count — the number of times the drive had to react to a track following issue. An
offtrack is not an error, but more offtracks will make it harder for the drive to operate within
expected limits.
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CCQ rewrite percent — an internal measure of write redundancy. Another indicator of health.
Anything up to 20% is within limits.
The summary shows a normalized margin figure for the drive overall and also highlights the worst
margin figure from all of the characterizations. This is the key data from the test.
NOTE: The textual output of the test will give the ultimate summary — PASS or FAIL. The test
results can be emailed to HP support for confirmation.
Connectivity test
Description Writes data to the internal buffers in your product to verify that the
physical connection between your host and the storage device is
operational. No media is required.
Command line syntax Test name: Connectivity Test
Options:
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Looping Options — Specify Count based loop or Time
based loop(min) . In either case, the actual value is entered
separately using the Looping value parameter.
For example, to set a time-based loop of 10 minutes:
testopt=”Looping Options:Time based loop(min)”
testopt=”Looping value:10”
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Looping value—Specify an integer greater than zero.
For example, to set a count-based loop to iterate five times:
testopt=”Looping Options:Count based loop”
testopt=”Looping value:5”
NOTE: If no options are specified, by default L&TT runs the test
with looping options set to Count based loop with a looping
value of 1.
When to run Run this test when there is a question about the integrity of the bus
connection from the device to the host computer.
Average duration < 1 minute
Other notes Test will not overwrite any data on media present in the drive.
Available for LTO drives, and MSL libraries
Data Compression test
CAUTION: This test is destructive and will overwrite data on the media that is present in your
product.
Diagnostic tests 31