Note:ThememorymodulesareextremelysensitivetoESD.Ensurethatyoureadandunderstand“Handling
static-sensitivedevices”onpage74firstandcarefullyperformtheoperation.
Memorymoduleinstallationrules
Yourserverhas24memoryslotsandithasthefollowingfeatures:
•Eachslotsupports4GB,8GB,16GB,and32GBdoubledatarate4(DDR4)registereddualinline
memorymodules(RDIMMs)withErrorCheckingandCorrecting(ECC)technology.
•Eachslotsupports32GBand64GBDDR4loadreductiondualinlinememorymodules(LRDIMMs)with
ErrorCheckingandCorrecting(ECC)technology.
•Yourserversupportsupto12memorymoduleswhenonemicroprocessorisinstalled.Supportsupto24
memorymoduleswhentwomicroprocessorsareinstalled.
•Theminimumsystemmemoryis4GB(onlyonemicroprocessorinstalledandonlyone4GBRDIMM
installedintheCPU1DIMMA1slot).
•Themaximumsystemmemoryis1536GB(twomicroprocessorsinstalledandone64GBLRDIMM
installedineachofthe24memoryslots).
Notes:Ifyouinstalla64GBDIMMinaserverwitheitherofthefollowingconfigurations,theserversupports
amaximumoperatingtemperatureof40°C(104°F):
•Twelve3.5-inchdrives
•Six2.5-inchdrivesandnine3.5-inchdrives
Formoreinformationaboutthememorymodulesinyourspecificservermodel,usetheSetupUtility
program.See“ViewinginformationintheSetupUtilityprogram”onpage61
.
ForalistofthesupportedThinkServermemorymoduleoptions,goto:
http://lenovoquickpick.com/usa/home/thinkserver/rack-and-tower-server
Beforeinstallingamemorymodule,ensurethatyouobservethefollowingguidelines:
•Allmemorymodulestobeinstalledmustbethesametype.Yourserversupportsthefollowingtypes
ofmemorymodules:
–DDR4RDIMMwithECCtechnology
–DDR4LRDIMMwithECCtechnology
•Whenyouinstallmemorymoduleswithdifferentranksinonechannel,startfromthefarthestmemoryslot
inthechannel.Installthememorymodulethathasthemostranksfirst.
•Whenyouinstallmemorymoduleswithdifferentfrequenciesintothememoryslotsforthesame
microprocessor,allthememorymodulesrunatthelowestfrequency.
•Itisrecommendedthatyouinstallthehigh-frequencymemorymodulesintothememoryslotsforthe
samemicroprocessortoensurehighperformance.
Chapter6.Replacinghardware85
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