Sun Microsystems SPARCstation 10 - Disk Drive Errors; Symptom; Action

Disk Drive Errors
Symptom
Disk drive read, write, or parity errors are reported by the operating system or
customer applications.
Action
Replace the disk drive indicated by the failure messages. The operating system
identifies the internal disk drive 0 (SCSI target address 3) as sd0 or c0t3d0 and
internal disk drive 1 (SCSI target address 1) as sd1 or c0t1d0.
Symptom
A disk drive fails to boot or is not responding to commands.
Action
This symptom could be caused by a defective system SCSI controller, so you should
first test the drive response to the probe-scsi command.
At the system ok prompt, type probe-scsi <Return>. If the disk drive responds
correctly to this command, a message appears, similar to the following:
ok probe-scsi
Target 1
Unit 0 Disk SEAGATE ST1480 SUN0424 Copyright (c) 1991
Target 3
Unit 0 Disk SEAGATE ST1480 SUN0424 Copyright (c) 1991
If the disk drive responds and a message is displayed, the system SCSI controller has
successfully probed the devices. This is an indication that the MLB is working
correctly. If one disk does not respond to the probe but the other does, replace the
unresponsive drive.
If your system has only one internal disk drive and the probe-scsi test fails to
show the device in the message, replace the disk drive. If the problem is still evident
after replacing the drive, replace the MLB. If replacing the disk drive and the MLB
does not correct the problem, replace the internal disk drive cable assembly.
Troubleshooting 27