IBM eServer xSeries 455 Type 8855 Hardware Maintenance Manual And Troubleshooting Manual page 62

SCSI Tape Test
Use the SCSI Tape Test to diagnose functions of a SCSI tape device. The SCSI
Tape tests include the following:
v SCSI Tape Buffer Test
v SCSI Tape Self Test
v SCSI Tape Read Test
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IBM xSeries 455 Type 8855: Hardware Maintenance Manual and Troubleshooting Guide
This test writes logical blocks of data to the internal buffer on the tape drive. The
same logical blocks of data are then read from the tape drive buffer and
compared to the original data. If the tape drive does not have an internal buffer,
you cannot select this test.
Select this choice to run the diagnostic tests on the SCSI tape drive.
To run the test, complete the following steps:
1. Select SCSI Tape Self Test, and press Enter.
2. Choose the parameters on the screen, and select Continue.
Note: You cannot quit the SCSI Tape Self Test. You must wait until the entire
disk self test completes.
Use this test to make sure that the SCSI tape drive is reading correctly. This test
reads sequential logical blocks from the SCSI tape. With default parameters, this
test requires fully written media to be installed in the device being tested.
Partially written media will result in a read error at the end of data. If only blank
media is available, use the SCSI Tape Write Test to write a test pattern onto the
blank media.
To run the SCSI Tape Read Test, complete the following steps:
1. From the main menu, select SCSI, and press Enter.
2. Select SCSI Tape Read Test, and press Enter. A default parameter screen
appears:
Select SCSI Disk Select SCSI Disk
Overall % Parameters
Overall % Parameters
SCSI Disk 0 SCSI Disk 0
CONTINUE CONTINUE
Parameter
overall %
Common:
SCSI Tape n
The following screen appears when you specify an individual drive:
SCSI Tape Read Test
SCSI Tape Read Test
Test Tape 0
Test Tape 0 : YES
Start Block
Start Block
: 000000000
End Block
End Block
: 002028000
CONTINUE
CONTINUE
A prompt for the percentage of the drive to be tested appears.
100
100
Description
Specifies drivewise % as set for each drive.
Use the term % to specify all drives
Specify an individual drive parameter.
: YES
: 000000000
: 002028000