HP Library and Tape Tools - Manual (Page 71)

5 Tests
L&TT provides numerous tests for analyzing storage hardware. These tests are grouped into two
categories: Diagnostic tests and Performance tests. The performance tests are built into the program,
but several of the diagnostic tests are SCSI script-based. A SCSI script is a sequence of SCSI
commands sent to a device, usually for the purpose of testing the device's functionality. SCSI scripts
can also be used to perform non-diagnostic utility functions, such as rewinding a tape, recalibrating
a tape head, or exercising a tape-moving robot arm.
NOTE:
•
L&TT uses the following types of SCSI scripts:
◦ Script-based tests and utilities are based on scripts that are stored in the scripts directory
in the L&TT installation directory. The script-based test and utility files can have the *.tst,
*.plg
, *.pmg *.smd, or *.rul extension.
◦ SCSI utility scripts provide access to generic SCSI operations. These scripts have the
*.scc
or *.cps extension.
•
Each script file contains information that tells L&TT which devices it is designed to support.
When a device is selected, the Tests screen displays only tests that are applicable to that
particular device.
•
All scripts have a digital signature and cannot be altered. If they are altered in a text editor,
L&TT displays an error message stating that the digital signature is not correct.
•
Only following tests are supported in Ethernet I/O mode:
◦ LTO Drive Assessment test
◦ LTO Media Assessment test
◦ Device Analysis
◦ Device Self-test
If the drive has firmware is older than 015.313 you will not be able to run any test except Device
Analysis in Ethernet I/O mode.
Diagnostic tests
CAUTION:
•
Some tests are destructive to data on the media. When a test is destructive to data, this is
indicated in the test description. To prevent data loss, use media that is either new or that
contains unimportant data that can be erased.
•
Do not attempt to perform a test unless you are thoroughly familiar with its usage, or have
been instructed to do so by HP support personnel.
NOTE: For more information on tests description, see the following below:
•
“Drive Specific tests” (page 72)
•
“Media Specific tests” (page 74)
•
“Library Specific tests support ticket” (page 79)
•
“Other tests” (page 85)
Diagnostic tests 71