NEC Express5800 System Configuration Manual

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NEC Express5800 System Configuration Manual Manual pdf 13 page image

SYSTEM CONFIGURATION GUIDE – NEC Express5800/R120h-2MNEC Corporation Revision 5.0 – January 2018 133 Memory3.1 Memory Configuration Feature ComparisonSee the table below for feature comparisons of memory configurations supported.Independent Channel Memory Sparing Memory MirroringPerformance Best Better GoodData Protection No Multiple single bit errorprotectionMultiple single bit and multi biterror protectionRedundancy No Partly FullyData Correction ECC, x4 SDDC ECC, x4 SDDC ECC, x4 SDDCAvailable Memory Full physical memory Two ranks of memory perchannel : Half physicalmemoryFour ranks of memory perchannel : 3/4 physical memoryEight ranks of memory perchannel : 7/8 physical memoryHalf physical memoryAvailable MemoryChannels6 6 6Notes - All DIMMs in the system mustbe identical.All DIMMs in the system mustbe identical.NOTE: Single Rank Memory (N8102-708/-709) does not support Memory Mirroring Mode Configuration Service. Refer to “10.2 Memory RAS Settings”3.2 MemoryAvailable slots: 12 per processorCategory Product Name / Description Part NumberRegistered DIMM(RDIMM)8GB DDR4-2666 REG Memory Kit (1x8GB/SR)1 x 8GB Registered ECC DIMM, DDR4-2666(PC4-2666), Single RankN8102-70816GB DDR4-2666 REG Memory Kit (1x16GB/SR)1 x 16GB Registered ECC DIMM, DDR4-2666(PC4-2666), Single RankN8102-70916GB DDR4-2666 REG Memory Kit (1x16GB/DR)1 x 16GB Registered ECC DIMM, DDR4-2666(PC4-2666), Dual RankN8102-71032GB DDR4-2666 REG Memory Kit (1x32GB/DR)1 x 32GB Registered ECC DIMM, DDR4-2666(PC4-2666), Dual RankN8102-711Load Reduced DIMM(LRDIMM)64GB DDR4-2666 LR Memory Kit (1x64GB/QR)1 x 64GB Load Reduced ECC DIMM, DDR4-2666(PC4-2666), Quad RankN8102-712128GB DDR4-2666 LR Memory Kit (1x64GB/OR)1 x 128GB Load Reduced ECC DIMM, DDR4-2666(PC4-2666), Octal RankN8102-713NOTE: Minimum one memory kit per processor must be installed. It is recommended to install memory kits in multiples of 6 identical DIMMs for 6-channel symmetric memory configurations toincrease memory transfer speed. Mix configurations of RDIMM and LRDIMM are not supported. Do NOT mix LRDIMM 64GB with LRDIMM 128GB. If you install more than six times N8102-713 128GB DDR4-2666 LR Memory Kit, you require one of the following CPU Processorcodes containing an “M” (N8101-1261/-1262/-1263/-1264/-1265/-1266/-1267/-1268/-1269/-1270/-1271/-1272/-1273/-1274) See page 43 for additional memory configuration informationMaximum Memory SpeedSee the table below for the actual maximum memory transfer speed. DDR4 memory speed depends on the native memory busspeed of the processor.Processor Type DIMM SpeedXeon ® Platinum 8100 seriesXeon ® Gold 6100 seriesXeon ® Gold 5122 Processor2666 MHz