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 4, “Parts listing, System x3550 M3 Types 4254 and 7944,” on page 159 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.
v Go to the IBM support Web site at http://www.ibm.com/systems/support/ to check for technical
information, hints, tips, and new device drivers or to submit a request for information.
Symptom Action
A replacement hard disk drive
does not rebuild.
1. Make sure that the hard disk drive is recognized by the adapter (the green hard
disk drive activity LED is flashing).
2. Review the SAS/SATA adapter documentation to determine the correct
configuration parameters and settings.
A green hard disk drive activity
LED does not accurately
represent the actual state of the
associated drive.
If the green hard disk drive activity LED does not flash when the drive is in use,
run the DSA Preboot diagnostic programs to collect error logs (see “Running the
diagnostic programs” on page 116).
v If there is a hard disk drive error log, replace the affected hard disk drive.
v If there is no disk drive error log error log, replace the affected backplane.
An amber hard disk drive status
LED does not accurately
represent the actual state of the
associated drive.
1. If the amber hard disk drive LED and the RAID adapter software do not
indicate the same status for the drive, complete the following steps:
a. Turn off the server.
b. Reseat the SAS/SATA adapter.
c. Reseat the backplane signal cable and backplane power cable.
d. Reseat the hard disk drive.
e. Turn on the server and observe the activity of the hard disk drive LEDs.
2. See “Problem determination tips” on page 156.
Hypervisor 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 4, “Parts listing, System x3550 M3 Types 4254 and 7944,” on page 159 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.
v Go to the IBM support Web site at http://www.ibm.com/systems/support/ to check for technical
information, hints, tips, and new device drivers or to submit a request for information.
Symptom Action
If an optional embedded
hypervisor flash device is not
listed in the expected boot
order, does not appear in the
list of boot devices, or a similar
problem has occurred.
1. Make sure that the optional embedded hypervisor flash device is selected on
the boot manager <F12> Select Boot Device) at startup.
2. Make sure that the embedded hypervisor flash device is seated in the
connector correctly (see “Removing a USB embedded hypervisor flash device”
on page 208 and “Installing a USB embedded hypervisor flash device” on page
209).
3. See the documentation that comes with the optional embedded hypervisor flash
device for setup and configuration information.
4. Make sure that other software works on the server.
Chapter 3. Diagnostics 87
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