Raid Troubleshooting - Digital Equipment DIGITAL Server 7100 1200 Service Maintenance Manual

RAID Troubleshooting

Problem
SBB fault LED lit.
SBB activity and fault LEDs
lit.
SBB fault LED flashing.
SBB fault status is either on
or off; fault status LED
flashing.
Replaced SBB drive does
not spin up to speed.
Multiple SBB drives have
failed.
SBB drive not seen by
RAID adapter.
Possible Cause
Disk drive failed.
Disk drive hung or has
failed.
Disk drive failed and is
spinning down.
Disk drive is active and
spinning down due to a
fault.
SBB drive not seen by
RAID controller.
No power available.
SCSI cable not connected.
Incorrect SCSI termination.
Duplicate SCSI IDs on the
bus.
Defective SBB drive.
SBB drive improperly
inserted.
Defective RAID adapter
Troubleshooting
Action
Replace disk drive.
Replace disk drive.
Replace disk drive.
Correct the fault or replace the disk
drive.
Manually rebuild the SBB drive.
Remove the SBB drive, wait 20
seconds, reinsert SBB drive. Wait
one minute and then rebuild the
SBB drive.
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.
Check all SCSI connections.
Properly terminate the SCSI bus.
Check SBB drive SCSI ID settings.
Replace SBB drive.
Reinsert SBB drive.
Replace the RAID adapter.
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