Troubleshooting Procedures 4-7
4
4.3.1 Verifying the Built-In SCSI Controller
To check whether the built-in SCSI controller is defective, test the drive
response to the probe-scsi command. To test additional SCSI host adapters
added to the system, use the probe-scsi-all command. Refer to
Section D.1.6, “module-info.”
1. At the ok prompt, type probe-scsi
See the following example.
a. If the disk drive responds and a message is displayed, the system SCSI
controller has successfully probed the devices.
This indicates that the system board is working correctly.
b. If a disk doesn’t respond:
i. Make sure that every SCSI disk and other SCSI device on the
SCSI bus has a different SCSI target ID (see Appendix C,
“SCSI Targeting”).
Note – Internal SCSI hard drives are automatically assigned target 3
(lower bay) and target 1 (upper bay).
ii. Verify that all SCSI cables and the SCSI terminator are connected
securely.
iii. Check the SCSI cables to make sure there are no bent pins.
iv. If you still have not found the problem, replace the
unresponsive drive.
v. If the problem still occurs after replacing the drive, replace the
system board.
vi. If the problem persists, replace the internal disk drive
cable assembly.
ok probe-scsi
Target 1
Unit 0 Disk CONNER CP30548 SUN0535AEBX93081QTT
Target 3
Unit 0 Disk SEAGATE ST3610N SUN0535881200054301
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