Sun Netra X4270 Server
 

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In this Document

Goal

Solution

References

Applies to:

Goal

How to Remove and Replace a Netra X4270 Memory DIMM

Solution

CAP PROBLEM OVERVIEW: Memory DIMM replacement for an X4170 or X4270

DISPATCH INSTRUCTIONS

- WHAT SKILLS DOES THE ENGINEER NEED: No specific skills required

- TIME ESTIMATE: 30 minutes

- TASK COMPLEXITY: 0

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

1.  Ensure that all power is removed from the server before removing or installing DIMMs, or damage to the DIMMs might occur. You must disconnect all power cables from the system before performing this procedure.

Step I: Replacing DIMMs

1.  Prepare the server for service.

2.  If there are full-length PCIe2 cards installed in PCIe slots 4 and 5, remove the PCI mezzanine, if necessary.

3.  Remove the air duct.

4.  When removing DIMMs from slots D4 through D8 next to CPU P0, remove the media bay assembly.

5.  Press the fault remind button on the motherboard to identify the location of the faulty DIMMs.

6.  Note the location of faulty DIMMs.

Faulty DIMMs are identified when a corresponding amber service action required LED lights next to the DIMM.
■ If the DIMM service action required LED is off: DIMM is operating properly.
■ If the DIMM service action required LED is on (amber): DIMM is faulty and should be replaced.

7. Remove the faulty DIMM by rotating both DIMM slot ejectors outward until the DIMM partially ejects from its socket. Carefully lift the DIMM out of its socket.

8. Replace each faulty DIMM with either another DIMM of the same rank size (quad rank, dual rank, or single rank) or a DIMM filler panel.

Caution – If you are not immediately inserting a replacement DIMM into the empty DIMM socket, you should insert a DIMM filler panel in the socket to ensure adequate cooling and reduce the possibility of a system shutdown.

Step II: Installing DIMMs

1. Unpack the new or replacement DIMMs and place them on an antistatic mat.

2. If you are replacing faulty DIMMs, ensure that the replacement DIMMs match the sizes of the DIMMs they are replacing. Do not replace a dual-rank DIMM with a quad-rank DIMM and vice versa. If you violate this rule, the performance of the server might be adversely affected.

DIMM population rule:

Do not populate any DIMM sockets next to an empty CPU socket. Each processor contains a separate memory controller.
■ Each CPU can support a maximum of:
■ Nine dual-rank (DR) or single-rank (SR) DIMMs; or
■ Six quad-rank (QR) DIMMs with two per memory channel; or
■ Three QR DIMMs with one per channel and three DR or SR DIMMs.
■ Populate DIMMs by location according to the following rules.
■ Populate the DIMM slots for each memory channel that are the farthest from the CPU first.
For example, populate D8/D5/D2 first; then D7/D4/D1 second; and finally, D6/D3/D0.
■ Populate QR DIMMs first, followed by SR or DR DIMMs.
■ Populate QR DIMMs in blue sockets (D8/D5/D2) first then white sockets (D7/D4/D1).
Note that QR DIMMs are supported only in white sockets if adjacent blue socket contains a QR DIMM.
■ Populate QR, SR, or DR DIMMs in sets of three for each CPU, one per memory channel.

3. Ensure that the ejector tabs are in the open position.

4. Line up the DIMM with the motherboard connector. Align the notch in the DIMM with the key in the connector. The notch ensures that the DIMM is oriented correctly.

5. Push the DIMM into the connector until the ejector tabs lock the DIMM in place. If the DIMM does not easily seat into the connector, verify that the notch in the DIMM is aligned with the key in the connector. If the notch is not aligned, damage to the DIMM might occur.

6. Repeat Step 3 through Step 5 until all replacement DIMMs are installed.

7. Install the media bay assembly.

8. Install the air duct.

9. Return the server to operation.

10. Clear the server DIMM faults. Also you can check the document section C - Post-Repair Procedures from the document: PSH Procedural Article for ILOM-Based Diagnosis Doc: 1155200.1.

  a) To see server faults, log in to the ILOM SP as root and type the following ILOM CLI command list all known fault on the system:
      -> show /SP/faultmgmt

      For example:

      -> show /SP/faultmgmt
      Targets:
        0 (/SYS/MB/P0/D2)
      Properties:
      Commands:
        cd
        show

  b) To clear the fault, type the following command:
      -> set /SYS/MB/Pn clear_fault_action=true
       Where Pn is the DIMM number. For example, to clear a fault on the DIMM in location D2 on CPU0:

      -> set /SYS/MB/P0/D2 clear_fault_action=true
      Are you sure you want to clear /SYS/MB/P0 (y/n)? y
      Set ‘clear_fault_action” to ‘true’

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

Boot up system and verify full functionality.

REFERENCE INFORMATION:

Service Manual: http://docs.oracle.com/cd/E19591-01/E23171/E23171.pdf

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