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Memory Installation Guidelines
- Observe the following rules when configuring DDR4 memory modules:
- Install memory modules only when corresponding processors are installed.
- Do not install LRDIMMs and RDIMMs in the same server.
- Install filler memory modules in vacant slots.
- Observe the following rules when configuring DDR4 memory modules in specific operating mode:
- Memory sparing mode
- Comply with the general installation guidelines.
- Each memory channel must have a valid online spare configuration.
- The channels can have different online spare configurations.
- Each populated channel must have a spare rank.
- Memory mirroring mode
- Comply with the general installation guidelines.
- Each processor supports two integrated memory controllers (IMCs). At least two channels of each IMC are used for installing memory modules (channels 1 and 2, or channels 1, 2, and 3). The installed memory modules must be identical in size and organization.
- For a multi-processor configuration, each processor must have a valid memory mirroring configuration.
- Memory scrubbing mode
- Comply with the general installation guidelines.
- Memory sparing mode