192 Sun Fire 280R Server Owner’s Guide • January 2001
2. Use the test command to get more information, type:
3. Take one of the following actions depending on what the probe-scsi command
reports:
a. If one drive does not respond to the FC-AL 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 test fails to show the device in the message, replace the drive.
4. If the problem is still evident after replacing the drive, replace the main logic
board.
5. If replacing both the disk drive and the main logic board does not correct the
problem, replace the associated FC-AL data cable and FC-AL backplane.
Note – Youcan also use the probe-scsi command to look for failures on the
FC-ALloop. An Unable to initialize error message indicates a problem on the
loop. Proceed by disconnecting all the loop devices and then probe the loop again.
If the loop is present, then swap drives in and out first, then cables, and finallyloop-
device backplanes to isolate the problem.
FC-AL Controller Failure
Symptom
A disk drive fails to boot or is not responding to commands.
Action
Tocheck whether the main logic board FC-AL controller is defective, first test the
drive response to the probe-scsi command and then run OpenBoot Diagnostics.
ok test /SUNW,qlc