Hard Disk Drive Problems; Intermittent Problems - IBM LS20 - BladeCenter - 8850 Service Manual

Hard disk drive problems

v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See Chapter 3, "Parts listing, Type 8850," on page 53 to determine which components are customer
replaceable units (CRU) and which components are field replaceable units (FRU).
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
Symptom
Not all drives are recognized by
the Fixed Disk diagnostic test.
The server stops responding
during the Fixed Disk diagnostic
test.
A hard disk drive passes the
Fixed Disk diagnostics test but
the problem remains.

Intermittent problems

v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See Chapter 3, "Parts listing, Type 8850," on page 53 to determine which components are customer
replaceable units (CRU) and which components are field replaceable units (FRU).
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
Symptom
A problem occurs only
occasionally and is difficult to
diagnose.
30
AMD Opteron LS20 Type 8850 for IBM BladeCenter: Problem Determination and Service Guide
Action
Remove the drive indicated on the diagnostic test; then, run the Fixed Disk
diagnostic test again. If the remaining drives are recognized, replace the drive that
you removed with a new one.
Remove the hard disk drive that was being tested when the server stopped
responding, and run the diagnostic test again. If the Fixed Disk diagnostic test runs
successfully, replace the drive that you removed with a new one.
Run the SCSI Fixed Disk diagnostic test.
Note: This test is not available on servers that have RAID arrays or servers that
have IDE or SATA disk drives.
Action
1. Make sure that:
v When the blade server is turned on, air is flowing from the rear of the blade
server at the blower grill. If there is no airflow, the blower is not working. This
causes the blade server to overheat and shut down.
v Ensure that the SCSI bus and devices are configured correctly.
2. Check the BMC log (see "Error logs" on page 17).