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Oracle® Server X6-2L Service Manual

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Updated: January 2018

DIMM Population Rules

The population rules for adding DIMMs to the server are as follows:

  • The server supports 64-GB quad-rank (QR) Load-Reduced DIMMs (LRDIMMs) and 32-GB dual-rank (DR) and 16-GB DR Registered DIMMs (RDIMMs).

  • Do not mix 64-GB LRDIMMs and 16-GB or 32-GB RDIMMs in the same server. If the server has 64-GB LRDIMMs installed, you cannot install 16-GB or 32-GB RDIMMs and vice versa.

  • Within a memory channel, DIMMs must be populated in the black sockets first, then in the black sockets with white tabs, and then in the white sockets.

  • If you are installing a mix of RDIMM sizes (for example, 16-GB and 32-GB), install the larger size RDIMMs first, then the smaller RDIMMs, until all of the RDIMMs are installed.

  • The server will operate properly with a minimum of one DIMM installed per processor.