Lenovo ThinkServer sd350 - Memory Module Installation

Ifyouareinstructedtoreturntheservercomponentoroptionaldevice,followallpackaginginstructions,
anduseanypackagingmaterialsforshippingthataresuppliedtoyou.
Memorymoduleinstallation
ThefollowingnotesdescribethetypesofDIMMsthattheserversupportsandotherinformationthatyou
mustconsiderwhenyouinstallDIMMs.
•ConfirmthattheserversupportstheDIMMthatyouareinstalling(seehttp://www.lenovo.com/us/en/
serverproven/).
•WhenyouinstallorremoveDIMMs,theserverconfigurationinformationchanges.Whenyourestartthe
server,thesystemdisplaysamessagethatindicatesthatthememoryconfigurationhaschanged.You
canusetheSetuputilitytoviewtheserverconfigurationinformation,see“UsingtheSetuputility”on
page34
formoreinformation.
•Theserversupportsonlyindustry-standarddouble-data-rate4(DDR4),2400MHz,PC4-19200
(single-rankordual-rank),unbufferedorsynchronousdynamicrandom-accessmemory(SDRAM)dual
inlinememorymodules(DIMMs)witherrorcorrectingcode(ECC).
•ThemaximumoperatingspeedoftheserverisdeterminedbytheslowestDIMMintheserver.
•IfyouinstallapairofDIMMsinDIMMconnectors1and3,thesizeandspeedoftheDIMMsthatyou
installinDIMMconnectors1and3mustmatcheachother.However,theydonothavetobethesame
sizeandspeedastheDIMMsthatareinstalledinDIMMconnectors2and4.
•YoucanusecompatibleDIMMsfromvariousmanufacturersinthesamepair.
•ThespecificationsofaDDR4DIMMareonalabelontheDIMM,inthefollowingformat.
•gggGBpheRxffPC4-wwwwaa-mccd-bb
where:
–gggGBisthetotalcapacity,ingigabytes,forprimarybus(ECCnotcounted)4GB,8GB,16GB,etc.
(nospacebetweendigitsandunits)
–pheRisthenumberofpackageranksofmemoryinstalledandnumberoflogicalranksperpackagerank
–p=
•1=1packagerankofSDRAMsinstalled
•2=2packageranksofSDRAMsinstalled
•3=3packageranksofSDRAMsinstalled
•4=4packageranksofSDRAMsinstalled
–he=blankformonolithicDRAMs,elseformodulesusingstackedDRAM:
•h=DRAMpackagetype
–D=multi-loadDRAMstacking(DDP)
–Q=multi-loadDRAMstacking(QDP)
–S=singleloadDRAMstacking(3DS)
•e=blankforSDP,DDPandQDP,elsemodulesusing3DSstacks,logicalranksperpackagerank
–2=2logicalranksineachpackagerank
–4=4logicalranksineachpackagerank
–8=8logicalranksineachpackagerank
–R=rank(s)
–xff=Deviceorganization(databitwidth)ofSDRAMsusedonthisassembly
•x4=x4organization(4DQlinesperSDRAM)
94LenovoThinkServersd350ServerType5493,LenovoThinkServern400EnclosureType5495InstallationandServiceGuide