
Note:ThememorymodulesareextremelysensitivetoESD.Ensurethatyoureadandunderstand“Handling
static-sensitivedevices”onpage68firstandcarefullyperformtheoperation.
Memorymoduleinstallationrules
Yourserverhas24memoryslotsandithasthefollowingfeatures:
•Eachslotsupports4GB,8GB,and16GBdoubledatarate4registereddualinlinememorymodules
(DDR4RDIMMs)withErrorCheckingandCorrecting(ECC)technology.
•Eachslotsupports32GBdoubledatarate4loadreductiondualinlinememorymodules(DDR4
LRDIMMs)withErrorCheckingandCorrecting(ECC)technology.
•Yourserversupportsupto12memorymoduleswhenonemicroprocessorisinstalled.Supportsupto24
memorymoduleswhentwomicroprocessorsareinstalled.
•Theminimumsystemmemoryis4GB(onlyonemicroprocessorinstalledandonlyone4GBRDIMM
installedintheCPU1DIMMA1slot).
•Themaximumsystemmemoryis768GB(twomicroprocessorsinstalledandone32GBLRDIMM
installedineachofthe24memoryslots).
Formoreinformationaboutthememorymodulesinyourspecificservermodel,usetheSetupUtility
program.See“ViewinginformationintheSetupUtilityprogram”onpage55
.
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.Replacinghardware79
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