Install a DIMM

Use this information to install a DIMM.

Before you install a DIMM:
  1. Read the following section(s) to ensure that you work safely.
  2. If you are installing DCPMMs for the first time, follow the instructions in DC Persistent Memory Module (DCPMM) setup so that the system supports DCPMMs.

Attention: 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.

You can find the DIMM tool attached to the air baffle.
Figure 1. DIMM tool
DIMM tool
The following illustration shows the location of the DIMM connectors on the system board.
Figure 2. The location of the DIMM connectors on the system board
The location of the DIMM connectors on the system board

Complete the following steps to install a DIMM.

Watch the procedure. A video of the installation process is available:
Important: Before installing a memory module, make sure that you understand the required installation order, depending on whether you are implementing memory mirroring, memory rank sparing, or independent memory mode. See DRAM Installation order for the required installation order.

  1. Remove the DIMM cover.
    Figure 3. DIMM cover removal
    DIMM cover removal
  2. Carefully use the DIMM tool to press down the retaining clips on each end of the DIMM connector.
    Note: DIMM tool is recommended due to space limitations caused by location of water loop tubes through the memory section.
    Figure 4. DIMM removal
    DIMM removal
    Attention:
    • DIMMs are static-sensitive devices. The package must be grounded before it is opened.

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

  3. Touch the static-protective package that contains the DIMM to any unpainted metal surface on the outside of the node. Then, remove the DIMM from the package.
  4. Carefully insert the DIMM into the connector by aligning the edges of the DIMM with the slots at the ends of the DIMM connector.
  5. Firmly press the DIMM straight down into the connector by applying pressure on both ends of the DIMM simultaneously. The retaining clips snap into the locked position when the DIMM is firmly seated in the connector.
    Figure 5. DIMM installation
    DIMM installation
    Note: If there is a gap between the DIMM and the retaining clips, the DIMM has not been correctly inserted; open the retaining clips, remove the DIMM, and then reinsert it.
  6. Reinstall the DIMM cover.
    Figure 6. DIMM cover installation
    DIMM cover installation

After you install a DIMM, complete the following steps:

  1. Reinstall the tray cover (see Install the tray cover).

  2. Reinstall the tray (see Install a DWC tray in the enclosure).

  3. Check the power LED on each node to make sure it changes from fast blink to slow blink to indicate both nodes are ready to be powered on.

  4. If you have installed a DCPMM:

    1. Update the system firmware to the latest version (see Update the firmware).

    2. Make sure the firmware of all the DCPMM units is the latest version. If not, update it to the latest version (see Updating firmware on managed devices with LXCA).

    3. Configure DCPMMs and DRAM DIMMs (see Configure DC Persistent Memory Module (DCPMM)).

    4. Restore the data that have been backed up if necessary.