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Memory module installation rules and order

Memory modules must be installed in a specific order based on the memory configuration that you implement and the number of processors and memory modules installed in the server.

Note

List of supported memory module is different for 1st generation (Skylake) and 2nd generation (Cascade Lake) Intel Xeon processors. Make sure to install compatible memory modules to avoid system error. For a list of supported DIMMs, see: Lenovo ServerProven website.

The following memory configurations and population sequences are supported for the ThinkSystem SR950 server:

For information about criteria that must be followed when selecting and installing memory modules in your server, see Memory guidelines.

For information about configuring memory settings, see Memory configuration.

  • Memory guidelines
    There are a number of criteria that must be followed when selecting and installing memory modules in your server.
  • DRAM DIMM installation order
    This section contains information of how to install DRAM DIMMs properly.
  • DCPMM installation order
    The server also supports Intel Optane DC persistent memory modules (DCPMMs). Use this information to determine the correct installation order, depending on the configuration.