Dell PowerEdge R720 Technical Manual

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Contents

Dell PowerEdge R720 Technical Manual Manual pdf 24 page image

24 PowerEdge R720 and R720xd Technical Guide5 MemoryMore memory options are available than ever before with the Dell PowerEdge R720 and R720xd—greater capacities, higher frequencies, and more flexibility. The R720 and R720xd support up to768GB of memory (24 DIMMs) and speeds up to 1866MT/s, providing high performance in a varietyof applications. High memory density means there is no compromise when it comes to virtualization.Increase your uptime and reduce data loss due to Dell’s focus on reliability, availability, andserviceability (RAS) features. RAS aids in the rapid and accurate diagnosis of faults which requireservice, increasing your memory reliability. System uptime is reinforced with RAS features likememory mirroring, sparing, and many others.In addition to supporting existing unbuffered DIMMs (UDIMMs) and registered DIMMs (RDIMMs), theR720 and R720xd support load reduced DIMMs (LRDIMMs), which use a buffer to reduce memoryloading and provide greater density, allowing for the maximum platform memory capacity.Supported memoryTable 7 lists the memory technologies supported by the R720 and R720xd.Table 7. Memory technologies supportedFeature UDIMM RDIMM LRDIMMRegister No Yes YesBuffer No No YesFrequencies* 1600MT/s 1333, 1600 or 1866MT/s 1600 or 1866MT/sRanks supported 1 1, 2 or 4 4Capacity per DIMM 4GB 4, 8, 16 or 32GB 32GBMaximum DIMMs perchannel 2 3 3DRAM technology x8 x4 or x8 x4Temperature sensor Yes Yes YesError Correction Code(ECC) Yes Yes YesSingle Device DisableCode (SDDC)Yes (with advancedECC mode) Yes YesAddress parity Yes Yes Yes*Although the R720 and R720xd support DIMM speeds lower than 1600MT/s, you can only purchase these systemswith DIMM speeds of 1600MT/s and 1866MT/s on Dell.com/PowerEdge.