•Themaximummemoryspeedisdeterminedbythecombinationofthemicroprocessor,DIMMspeed,
DIMMtype,OperatingModesinUEFIsettings,andthenumberofDIMMsinstalledineachchannel.
•Theserversupportsamaximumof24single-rank,dual-rankRDIMMsor24quad-rankLRIMMs.
•Thefollowingtableshowsanexampleofthemaximumamountofmemorythatyoucaninstallusing
rankedDIMMs:
Table11.MaximummemoryinstallationusingrankedDIMMs
NumberofDIMMsDIMMtypeDIMMsizeTotalmemory
24
Single-rankRDIMMs8GB192GB
24Dual-rankRDIMMs
8GB192GB
24Dual-rankRDIMMs
16GB384GB
24Dual-rankRDIMMs
32GB768GB
24
Quad-rankLRDIMMs64GB
1.5TB
•TheRDIMMoptionsthatareavailablefortheserverare8GB,16GB,and32GB.Theserversupportsa
minimumof8GBandamaximumof768GBofsystemmemoryusingRDIMMs.
•TheLRDIMMoptionthatisavailablefortheserveris64GB.Theserversupportsaminimumof64GB
andamaximumof1.5TBofsystemmemoryusingLRDIMMs.
Note:Theamountofusablememoryisreduceddependingonthesystemconfiguration.Acertain
amountofmemorymustbereservedforsystemresources.Toviewthetotalamountofinstalledmemory
andtheamountofconfiguredmemory,runtheSetupUtility.Foradditionalinformation,see“Configuring
theserver”onpage50
.
•AminimumofoneDIMMmustbeinstalledforeachmicroprocessor.Forexample,youmustinstalla
minimumoftwoDIMMsiftheserverhastwomicroprocessorsinstalled.However,toimprovesystem
performance,installaminimumoffourDIMMsforeachmicroprocessor.
•DIMMsintheservermustbethesametype(RDIMMorLRDIMM)toensurethattheserverwilloperate
correctly.
Notes:
1.YoucaninstallDIMMsformicroprocessor2assoonasyouinstallmicroprocessor2;youdonothave
towaituntilalloftheDIMMslotsformicroprocessor1arefilled.
2.DIMMslots13-24arereservedformicroprocessor2;thus,DIMMslots13-24areenabledwhen
microprocessor2isinstalled.
ThefollowingillustrationshowsthelocationoftheDIMMconnectorsonthesystemboard.
Chapter5.Installing,removing,andreplacingcomponents173
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