Sun Microsystems enterprise server 220r Manuel D’Utilisation

Chapter 7

Diagnostics and Troubleshooting

151

2. If the SCSI device responds correctly to

probe-scsi-all

, a message similar to

the “probe-scsi-all output:” on page 146 is printed out.

If the device responds and a message is displayed, the system SCSI controller has
successfully probed the device. This indicates that the main logic board is operating
correctly.

a. If one drive does not respond to the SCSI controller probe but the others do,

replace the unresponsive drive.

b. If only one internal disk drive is configured with the system and the

probe-scsi-all

test fails to show the device in the message, replace the

drive.

c. If the problem is still evident after replacing the drive, replace the main logic

board.

d. If replacing both the disk drive and the main logic board does not correct the

problem, replace the associated UltraSCSI data cable and UltraSCSI backplane.

SCSI Controller Failure

To check whether the main logic board SCSI controllers are 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. You can use the OBP

printenv

command to display the OpenBoot PROM configuration variables stored in the
system NVRAM. The display includes the current values for these variables as well
as the default values. See “OBP printenv Command” on page 145 for more
information.

1. At the

prompt, type:

If a message is displayed for each installed disk, the system SCSI controllers have
successfully probed the devices. This indicates that the main logic board is working
correctly.

2. If a disk doesn’t respond, replace the unresponsive drive.

3. If the problem remains after replacing the drive, contact your qualified service

provider to replace the associated SCSI cable and backplane.

ok probe-scsi