Remove a DIMM

Use this information to remove a memory module.

Before you remove a DIMM:
  1. Read the following section(s) to ensure that you work safely.
  2. If you are removing a DCPMM in App Direct or Mixed Memory Mode, make sure to:

    1. Back up the stored data.

    2. If the App Direct capacity is interleaved:
      1. Delete all the created namspaces and filesystems in the operating system.

      2. Perform secure erase on all the DCPMMs that are installed. Go to Intel Optane DCPMMs > Security > Press to Secure Erase to perform secure erase.

      Note: If one or more DCPMMs are secured with passphrase, make sure security of every unit is disabled before performing secure erase. In case the passphrase is lost or forgotten, contact Lenovo service.
      If the App Direct capacity is not interleaved:
      1. Delete the namespace and filesystem of the DCPMM unit to be replaced in the operating system.

      2. Perform secure erase on the DCPMM unit that is to be replaced. Go to Intel Optane DCPMMs > Security > Press to Secure Erase to perform secure erase.

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

  4. Remove the tray (see Remove a DWC tray from the enclosure).

  5. Remove the tray cover (see Remove the tray cover).

You can find the DIMM tool attached to the air baffle.
Figure 1. DIMM tool
DIMM tool
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.

Complete the following steps to remove a DIMM.

Watch the procedure. A video of the installation process is available:

  1. Remove the DIMM cover.
    Figure 2. DIMM cover removal
    DIMM cover removal
  2. Carefully use the DIMM tool to press the retaining clips outward on each end of the DIMM connector.
    Figure 3. DIMM removal
    DIMM removal
    Attention: To avoid breaking the retaining clips or damaging the DIMM connectors, open and close the clips gently.
  3. Carefully remove the DIMM.
    Figure 4. DIMM removal
    DIMM removal

If you are instructed to return the component or optional device, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.