Inconsistencies Between Dimm Fault Leds And The Bios Mapping Of Faulty Dimms; Remove Faulty Dimms - Sun Oracle Sun Fire X4270 M2 Service Manual

4.2.5 Inconsistencies Between DIMM Fault LEDs and
the BIOS Mapping of Faulty DIMMs
When a single DIMM is marked as faulty by ILOM (for example,
fault.memory.intel.dimm.training-failed is listed in the SP Event Log),
BIOS might map out the entire memory channel that contains the faulty DIMM as
failing, that is, up to three DIMMs. As a result, the memory available to the operating
system is reduced.
However, when the Fault Remind button is pressed, only the fault LED associated
with the faulty DIMM lights. The fault LEDs for the other two DIMMs in the memory
channel remain off. Therefore, you can correctly identify the faulty DIMM.
When the faulty DIMM is replaced and the DIMM fault is cleared using ILOM, the
memory available to the operating system returns to normal. For instructions for
clearing DIMM faults, see the Oracle Integrated Lights Out Manager (ILOM) 3.0
Supplement for Sun Fire X4170 M2 and X4270 M2 Servers (821-0489).
4.2.6

Remove Faulty DIMMs

Note – The DDR3 memory DIMMs are customer-replaceable units (CRUs) and do
not require an authorized service provider for replacement.
1. Prepare the server for service.
a. Power off the server and disconnect the power cord (or cords) from the server
b. Extend the server into the maintenance position.
c. Attach an antistatic wrist strap.
d. Remove the top cover.
2. Remove the faulty DDR3 DIMM(s).
4-8 Sun Fire X4270 M2 Server Service Manual • May 2011
power supply (or supplies).
See Section 2.4.2, "Power Off the Server" on page
See Section 2.6, "Extending the Server to the Maintenance Position" on
page 2-26.
See Section 2.9, "Performing Electrostatic Discharge and Antistatic Prevention
Measures" on page 2-31.
See Section 2.10, "Removing the Server's Top Cover" on page
2-4.
2-33.