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• If you are instructed to remove, install, or replace any CRUs, refer to the related procedure in Chapter 6
“Installing, removing, or replacing hardware” on page 69.
• The status LEDs on each hot-swap hard disk drive help you easily identify a problem. See “Hot-swap
hard disk drive status LEDs” on page 32.
Symptom
Action
A newly installed hot-swap hard disk drive is not
recognized.
1. Ensure that the drive is installed into the correct drive
bay.
2. Restart the server.
3. Remove the drive from the bay, wait 45 seconds,
and reinsert the drive into the bay, making sure that
the drive connects to the hot-swap hard disk drive
backplane.
4. Run any diagnostic programs to test the hard disk
drive if you have.
5. Ensure that the hot-swap hard disk drive backplane
is correctly seated. When it is correctly seated,
the drive assemblies correctly connect to the
backplane without bowing or causing movement of
the backplane.
6. Ensure that the cable connection is correct. See
“Mini-SAS to mini-SAS signal cable connections” on
page 38.
7. Reconnect the backplane power cable and repeat
step 1 through step 4.
8. Reconnect the backplane signal cable and repeat
step 1 through step 4.
9. If you suspect a problem with the backplane signal
cable or the backplane:
a. Replace the affected backplane signal cable.
b. Replace the affected backplane.
Multiple hard disk drives fail.
1. Ensure that the cable connection is correct. See
“Mini-SAS to mini-SAS signal cable connections” on
page 38.
2. Reconnect the power cable(s).
3. Reconnect the signal cable(s).
4. Replace the affected signal cable(s).
5. If you suspect a problem with the backplane, replace
the affected backplane.
Memory module problems
Follow the suggested actions for the corresponding symptom in the order in which they are listed until the
problem is solved. If none of these actions solve the problem, see “Troubleshooting procedure” on page 157
for the subsequent steps you should check after using the information in this topic. If the problem still cannot
be solved, seek technical assistance. See Chapter 8 “Getting information, help, and service” on page 163.
Notes:
• If you are instructed to remove, install, or replace any CRUs, refer to the related procedure in Chapter 6
“Installing, removing, or replacing hardware” on page 69
.
160 ThinkServer User Guide