Remove a memory module (dual-side cooling)

Use this information to remove a memory module that requires dual-side cooling.

Important

128GB RDIMM, 32GB MRDIMM, 64GB MRDIMM require dual-side cooling. (32GB, 64GB, and 96GB RDIMM require single-side cooling, refer to Memory module (single-side cooling) replacement.)

About this task

Attention

• Read Installation Guidelines and Safety inspection checklist to ensure that you work safely.

• Turn off the corresponding DWC tray that you are going to perform the task on.

• Disconnect the power cords and all external cables from the enclosure.

• Disconnect the power cords from the enclosure.

• Make sure to remove or install memory module 20 seconds after disconnecting power cords from the system. It allows the system to be completely discharged of electricity and safe for handling memory module.

• Use extra force to disconnect QSFP cables if they are connected to the solution.

• Memory modules are sensitive to static discharge and require special handling. In addition to the standard guidelines for Handling static-sensitive devices:

  • Always wear an electrostatic-discharge strap when removing or installing memory modules. Electrostatic-discharge gloves can also be used.

  • Never hold two or more memory modules together so that they touch. Do not stack memory modules directly on top of each other during storage.

  • Never touch the gold memory module connector contacts or allow these contacts to touch the outside of the memory-module connector housing.

  • Handle memory modules with care: never bend, twist, or drop a memory module.

The following illustration shows the location of the processor sockets and memory module connectors on the system board.

Figure 1. Processor socket and memory module connector location

Note

The following illustration might differ slightly from your hardware, but the installation method is the same.

Watch the procedure

• A video of this procedure is available at YouTube.

Procedure

1. Make preparations for this task.
   1. Remove the tray from the enclosure. See Remove a tray from the enclosure.
   2. Remove the tray cover. See Remove the tray cover.
2. Remove the enclosure filler in the enclosure rear.
   1. From the enclosure rear, loosen five thumbscrews that secures the filler to the enclosure.
   2. Pull out the filler from the enclosure.
   Figure 2. Removing the enclosure filler
   
   
3. The DIMM removal tool is magnetically attached to the inside of the filler. Remove the tool from the filler.
   Figure 3. Acquiring the DIMM removal tool
   
   
4. Remove the memory module tool attached to the DIMM comb.
   Note

   Memory module tool is recommended due to space limitations caused by location of water loop tubes through the memory section.

   Figure 4. Memory module tool removal
   
   
5. Unlock the retaining clips on each end of the memory module connector with the memory module tool.
   1. Place the tip of the tool on the top of the retaining clip.
   2. Press the tool to rotate and unlock the retaining clip.
   Figure 5. Pressing retaining clips on memory module connector
   
   

   Attention

   • Memory modules are static-sensitive devices. The package must be grounded before it is opened.

   • To avoid breaking the retaining clips or damaging the memory module connectors, open and close the clips gently.

6. Install the DIMM removal tool to the memory module.
   1. Slightly pull out the sides of the tool.
   2. There are slots on the inside of both ends of the tool. Align the slots with the memory module.
   3. Press the tool to the memory module until the tool is attached to the memory module.
      Figure 6. Installing DIMM removal tool to memory module
      
      
   4. Release the sides of the tool so that the DIMM is fitted to the tool.
      Figure 7. Releasing the sides of the tool
      
      
7. Hold the right end and left end of the DIMM removal tool with thumbs and index fingers.
   Figure 8. Holding the DIMM removal tools with thumbs and index fingers
   
   
8. While holding the DIMM removal tool, remove the DIMM from the DIMM slots. Keep the memory module in parallel with the memory module slots.
   Note

   Memory module should be in horizontal position during removal.

   Figure 9. Holding the DIMM removal tools with thumbs and index fingers
   
   

   Figure 10. Removing the DIMM
   
   
9. Release the tool and remove it from the DIMM.
   Figure 11. Remove the DIMM removal tool from the DIMM
   
   
10. Install the memory module tool to the DIMM comb.
    Figure 12. Memory module tool installation
    
    
11. Attach the magnetic side of the DIMM removal tool to the inside of the enclosure filler.
    Figure 13. Attaching tool magnetic side to the enclosure inside
    
    
12. Install the enclosure filler in the enclosure rear.
    1. From the enclosure rear, insert the enclosure filler into the enclosure.
    2. Fasten five thumbscrews to secures the filler to the enclosure.
    Figure 14. Installing the enclosure filler