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Install a memory module

Memory modules are installed in the system boards that are accessed from the front of the server.

disconnect all power
The power-control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.
Make sure that all server power cords are disconnected from their power sources before performing this procedure.

See Memory module installation rules and order for detailed information about memory configuration and setup.

If you are installing an optional processor, install it before installing memory modules. See Install a processor-heat-sink module

See Lenovo ServerProven website for a list of all the memory module types and capacities that are supported for your server.

  • Do not mix RDIMMs and LR-DIMMs in the same server.

  • Install higher capacity (ranked) DIMMs first, following the population sequence for the memory mode being used.

  • Installing or removing DIMMs changes the server configuration. When you restart the server, it displays a message that indicates that the memory configuration has changed. There are multiple ways to view the server configuration. See Management options for a description of each management method and how each method applies to various deployment situations.

If the system board is already installed in the server:
  1. If the front cover is installed, remove it. See Remove the front cover.

  2. Remove the compute tray with the system board where you are installing the memory module. See Remove a compute tray.

  3. If you are installing a memory module in the lower compute system board, remove the upper system board or system board filler. See Remove a system board.

Figure 1. Memory module locations
DIMM locations
Table 1. Memory module locations on each system board
DIMM numberSystem board 1 (lower board, lower tray) DIMM numberSystem board 2 (upper board, lower tray) DIMM numberSystem board 3 (lower board, upper tray) DIMM numberSystem board 4 (upper board, upper tray) DIMM number

Complete the following steps to install a memory module:

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.

  1. Install the memory module.
    Figure 2. Memory module installation
    DIMM installation
    1. Open the memory module connector retaining clips. If a memory module is already installed in the connector, remove it.
    2. Align the keys on the memory module that you are installing with the connector; then, insert the memory module.
    3. Firmly press both ends of the memory module straight down into the connector until the retaining clips snap into the locked position.
  2. If you are installing additional memory modules, do so now.
After installing a memory module option:
  1. Install the upper system board or system board filler, if it was removed. See Install a system board.

  2. Install the compute tray . See Install a compute tray.

  3. If you have no additional options to install in the upper or lower compute tray, install the front cover. See Install the front cover.

Demo video

Watch the procedure on YouTube