How To Remove and Replace X4100 Memory DIMM:ATR:1211:0 [VIDEO]

Asset ID:	1-71-1310984.1
Update Date:	2011-04-21
Keywords:

Solution Type Technical Instruction Sure

Solution 1310984.1 : How To Remove and Replace X4100 Memory DIMM:ATR:1211:0 [VIDEO]

Applies to:

Sun Fire X4100 M2 Server - Version: Not Applicable and later [Release: N/A and later ]
Sun Fire X4100 Server - Version: Not Applicable and later [Release: N/A and later]
Information in this document applies to any platform.

Goal

How To Remove and Replace X4100 Memory DIMM

Video - ATR 1211 (3:41)

Solution

DISPATCH INSTRUCTIONS

WHAT SKILLS DOES THE ENGINEER NEED:

General Sun X86 servers hardware knowledge.
Differences between X4100 and X4100 M2

DELIVERY REQUIREMENT:

This replacement implies a completed shutdown and poweroff of the servers. Replacement will clearly need to take place during a maintenance window.
As usual, this operation requires a full production stop on the server. Thus, unless advised otherwise, this should be planned with the customer.

ESTIMATE AP DURATION:

About 30 minutes from the moment the OS is shutdown to the moment the OS is about to startup.

FIELD ENGINEER INSTRUCTIONS:

PROBLEM OVERVIEW:

Replace a specific DIMM.

*CAUTION* :

1. X4100 use DDR memory modules whilst X4100 M2 use DDR2 modules.

2. DDR2 DIMMs always come in pairs. For X4100M2, it will always be an even number of DIMMs to be replaced.

WHAT STATE SHOULD THE SYSTEM BE IN TO BE READY TO PERFORM THE RESOLUTION ACTIVITY?

0. Preparation :
0.1 Make sure about the DIMMs location (that consists of a CPU location AND a DIMM number)
0.2 Make sure about the type of X4100 that is concerned : X4100 uses DDR1 DIMM, X4100 M2 uses DDR2 DIMMs.
These 2 types of DIMMs are incompatible between them. So prior to starting the maintence operation
0.3 Read the rules related to populating a X4100/X4100 M2 memory DIMM sockets.
0.4 Use of Solaris FM commands such as :
# fmdump -v
# fmadm clear <UUID> if Solaris is the installed OS and if fmdump -v reports a faulty DIMM for the
date of fault reported by the Customer/Sun Support engineer.

Also a clean shutdown is required. Leave this to customer unless agreed otherwise.

WHAT ACTION DOES THE ENGINEER NEED TO TAKE:

0. Make sure it is possible to completely pull server out of rack.
You may need to remove some network cables or optical fibers.
Best is to write down a simple wiring diagram prior to removal.

1. Shutdown of host, make sure host is powered off
2. Remove power cords
3. Pull out server
4. Remove its top cover.
5. Locate DIMMs to be replaced.
6.Remove the concerned DIMMs by pushing both edges at a slow pace. Place DIMMs even if faulty
on a ESD mate.
7. Make sure the new DIMMs are the same p/n than the removed ones.
8. Make sure of their location (pay attention to the "nodge" on both DIMMs and Mainboard)
9. Evenly and gently press down the DIMM into its slots, pushing gently but firmly from their edges.

Should a "resistance" occur, DO NOT FORCE !
Remove the DIMM, check nodge, check p/n and retry step 8.

10. Replace top cover, push in the server into its racks, reconnect all the unpluggued cables and then
11. Put back in place the power cords.

OBTAIN CUSTOMER ACCEPTANCE
WHAT ACTION DOES THE CUSTOMER NEED TO TAKE TO RETURN THE SYSTEM TO AN OPERATIONAL STATE:

1. Best is to fully monitor the BIOS startup to make sure all expected memory is present.
2. Bootup the OS
3. If the OS is Solaris, check fmadm/fmdump command outputs
4. Check total memory available and monitor error logs to check any new memory error messages
PARTS NOTE:
Read carefully 3.12.15.1 section whose title is "Supported DIMMs"
DIMM come always in pair. Also check p/n as it is not permitted to mix different part numbers
inside the same DIMM group. Also check memory installations rules.
*CAUTION* :
1. X4100 use DDR memory modules whilst X4100 M2 use DDR2 modules.
2. DDR2 DIMMs always come in pairs. For X4100M2, it will always be an even number of DIMMs to be replaced.

REFERENCE INFORMATION:
X4100/X4100 M2 Server Service Manual DocID=819-1157

DIMM Population Rules
http://download.oracle.com/docs/cd/E19121-01/

X4100 M2 full component list, section "Memory" (to insist on the fact that DIMMs come in pairs): https://support.us.oracle.com/handbook_internal/Systems/SunFireX4100_M2/components.html#Memory

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