Troubleshooting Scsi Hard-Disk Drives - Dell PowerEdge 4200 Installation And Troubleshooting Manual

8. Reseat the cable connectors and replace the com-
puter covers. Reconnect the system to AC power
and turn it on.
Is the problem resolved?
Yes. You have fixed the problem.
No. Go to step 9.
9. Turn off the system, including any attached
peripherals, and disconnect all the AC power
cables from their power sources. Then remove the
right computer cover.
10. Remove the tape drive. Then verify that the tape
drive is configured for a unique SCSI identifica-
tion (ID) number and that the tape drive is
terminated or not terminated as appropriate.
See the documentation for the tape drive for instruc-
tions on selecting the SCSI ID and enabling or
disabling termination.
Is the tape drive configured correctly?
Yes. Go to step 13.
No. Go to step 11.
11. Reconfigure the tape drive's SCSI ID and termi-
nation settings as appropriate. Reinstall the tape
drive, replace the computer covers, and reconnect
the system to AC power and turn it on.
Is the problem resolved?
Yes. The tape drive was configured incorrectly. You
have fixed the problem.
No. Go to step 12.
12. Turn off the system, including any attached
peripherals, and disconnect all the AC power
cables from their power sources. Then remove the
computer covers.
13. Replace the SCSI cable that connects the tape
drive to the SCSI host adapter. Replace the com-
puter covers, and then reconnect the system to
AC power and turn it on.
Is the problem resolved?
Yes. You have fixed the problem.
No. See Chapter 11, "Getting Help," for instructions
on obtaining technical assistance.
T
roubleshooting SCSI Hard-Disk
Drives
Hard-disk drive problems can be caused by a number of
conditions, including problems with the drive itself, the
SCSI backplane board, or an interface cable.
The SCSI backplane board monitors the internal SCSI
hard-disk drives connected to the backplane board. In the
event of a drive failure, systems using the optional Dell
PowerEdge Expandable RAID Controller will issue the
following signals using the drive indicator lights adjacent
to each SCSI hard-disk drive:
•
If a drive shows signs of imminent failure, the drive
online indicator turns off and the drive failure indica-
tor blinks on briefly each second.
•
If a drive has failed, the drive online indicator turns
off and the drive failure indicator blinks off briefly
each second.
Other drive indicator patterns are listed in Table 3-3,
"SCSI Hard-Disk Drive Indicator Patterns."
Use the following procedure to troubleshoot a hard-disk
drive problem.
CAUTION: This troubleshooting procedure can
destroy data stored on the hard-disk drive. Before
you proceed, make sure you have backed up all
the files on the hard-disk drive.
1. If the on-board SCSI host adapter is being used to
control the SCSI backplane board, restart the
system and press <F2> to enter the System Setup
program.
Is the On-Board SCSI-A category set to Enabled?
Yes. Go to step 3.
No. Go to step 2.
2. Change the On-Board SCSI-A category to
Enabled, and reboot the system.
Is the problem resolved?
Yes. You have fixed the problem.
No. Go to step 3.
Checking Inside the Computer 7-19