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DRAM DIMM installation rules

For RDIMMs or LRDIMMs, the following memory modes are available:
  • All DIMMs to be installed must be the same type. Do not mix RDIMM and LRDIMM in the same server.

  • When you install DIMMs with same rank and different capacity, install the DIMM that has the highest capacity first.

  • When you install DIMMs with different rank, install the DIMM with highest rank first.