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XH321L V5 Server Node V100R005 Maintenance and Service Guide 02

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
DIMM Installation Rules

DIMM Installation Rules

General DIMM Installation Rules

  • CPU sockets connected to the installed DIMMs cannot be empty.
  • Do not mix LRDIMMs and RDIMMs in the same server node.
  • For the DIMM installation sequence, see DIMM Slot Locations.
  • When installing DIMMs in a memory channel, install DIMMs of more ranks and then DIMMs of fewer ranks (starting from the slot farthest from the CPU in the channel). For example, install quad-rank DIMMs, then dual-rank DIMMs, and then sing-rank DIMMs.

Installation Rules for the Memory Sparing Mode

  • Follow the general DIMM installation rules.
  • The spare configuration of each channel must be valid.
  • Different channels can have different spare configurations.
  • Each channel with DIMMs installed must have a spare rank.

Installation Rules for the Memory Mirroring Mode

  • Follow the general DIMM installation rules.
  • Install DIMMs in either channels 1 and 2, or channels 3 and 4. The installed DIMMs must be of the same size and organization.
  • For a multi-CPU configuration, each CPU must have a valid memory mirroring configuration.

Installation Rules for the Memory Patrol Mode

See the general DIMM installation rules.

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Updated: 2019-01-08

Document ID: EDOC1100033003

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