HP Library and Tape Tools - Manual (Page 96)

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Test Size —The maximum amount of data written/read by the test. Valid choices are
1GB, 2GB, 4GB, 8GB, 16GB, 32GB, 64GB, 128GB, and Full Tape. Larger values
increase the time required to perform the test, but they produce more accurate test results
(suggested starting value is 4GB).
•
File Mark Mode —Instructs the test to write a filemark at the specified interval (1MB
to 1GB). You can also instruct the test not to write any filemarks (suggested starting value
is No filemarks).
•
Read After Write —The test evaluates two sets of metrics when enabled, and one
set when disabled (suggested starting value is disabled). When enabled, data is written
to the tape and then the tape is read back. When disabled, only write performance is
measured.
•
Rate Limiting —If rate limiting is enabled, the I/O rate is limited to the specified value
(suggested starting value is disabled).
•
Compare after Read — This option checks the integrity of the data but will reduce
the transfer rate of the test. Performance is not reported when this option is selected. To
measure true performance, run the test with this option unselected. You can enable this
option only when Read After Write and Fixed Block Mode are selected.
6. Click Start to perform the test. Progress of the test is displayed under the Progress column for
the corresponding drives. The numbers indicate the percentage of test completion. A dialog
box will appear to inform you when the test is complete.
7. Click the Drive Performance Results tab to view the results of the test. In the Drive Performance
Results tab, all the operations corresponding to each of the individual drives are displayed
under the corresponding tree nodes.
96 Tests