User`s guide

Problem Solving and Troubleshooting
11-14
RAID Troubleshooting
Problem Possible Cause Action
SBB fault LED lit. Disk drive failed. Replace disk drive.
SBB activity and fault
LEDs lit.
Disk drive hung or has
failed.
Replace disk drive.
SBB fault LED flashing. Disk drive failed and is
spinning down.
Replace disk drive.
SBB fault status is either
on or off; fault status LED
flashing.
Disk drive is active and
spinning down due to a
fault.
Correct the fault or replace the disk
drive.
Replaced SBB drive does
not spin up to speed.
SBB drive not seen by
RAID controller.
Manually rebuild the SBB drive.
Remove the SBB drive, wait 20
seconds, reinsert SBB drive. Wait one
minute and then rebuild the SBB drive.
Multiple SBB drives have
failed.
No power available. Restore power, run the RAID
configuration utility and change the
state of any failed (FLD) SBB drive to
optimal (OPT).
Run the RAID configuration utility and
check for bad blocks on the SBB
drives. Repair any bad blocks.
SBB drive not seen by
RAID host adapter.
SCSI cable not connected.
Incorrect SCSI
termination.
Duplicate SCSI IDs on the
bus.
Defective SBB drive.
SBB drive improperly
inserted.
Defective RAID host
adapter SCSI channels.
Check all SCSI connections.
Properly terminate the SCSI bus.
Check SBB drive SCSI ID settings.
Replace SBB drive.
Reinsert SBB drive.
Replace the RAID host adapter or
contact your Digital service
representative.