Lenovo System x3550 M5 - Page 176

Table25.Maximummemoryinstallation(continued)
NumberofDIMMsDIMMtypeSizeTotalmemory
24Dual-rankRDIMM
16GB384GB
24Dual-rankRDIMM
32GB768GB
24
Quad-rankLRDIMM64GB1536GB
•TheRDIMMoptionsthatareavailablefortheserverare8GB,16GB,and32GB.Theserversupportsa
minimumof8GBandamaximumof768GBofsystemmemoryusingRDIMMs.
•TheLRDIMMoptionthatisavailablefortheserveris64GB.Theserversupportsaminimumof64GB
andamaximumof1536GBofsystemmemoryusingLRDIMMs.
Note:Theamountofusablememoryisreduceddependingonthesystemconfiguration.Acertain
amountofmemorymustbereservedforsystemresources.Toviewthetotalamountofinstalledmemory
andtheamountofconfiguredmemory,runtheSetupUtility.Foradditionalinformation,see“Configuring
theserver”onpage34
.
•AminimumofoneDIMMmustbeinstalledforeachmicroprocessor.Forexample,youmustinstalla
minimumoftwoDIMMsiftheserverhastwomicroprocessorsinstalled.However,toimprovesystem
performance,installaminimumoffourDIMMsforeachmicroprocessor.
•DIMMsintheservermustbethesametype(RDIMMorLRDIMM)toensurethattheserverwilloperate
correctly.
•Whenyouinstallonequad-rankDIMMinachannel,installitintheDIMMconnectorfurthestawayfrom
themicroprocessor.
Notes:
–YoucaninstallDIMMsformicroprocessor2assoonasyouinstallmicroprocessor2;youdonothave
towaituntilalloftheDIMMslotsformicroprocessor1arefilled.
–DIMMslots13-24arereservedformicroprocessor2;thus,DIMMslots13-24areenabledwhen
microprocessor2isinstalled.
•ReadthefollowingtablebeforeinstallingmemorymoduleswhenanyNVIDIAadapterisinstalled.
Table26.NVIDIAvideoadapterconfigurations
Description
Supportedmaximumtotalmemorysize
NVIDIAQuadroK420,K600,andK620
1TB
162LenovoSystemx3550M5InstallationandServiceGuide