Lenovo System x3650 M4 HD - Installing a Memory Module

YoucanenableranksparingmemoryintheSetuputility,selectSystemSettings➙Memory.Formore
information,see“UsingtheSetuputility”onpage103
.
Themaximumavailablememoryisreducedwhenmemoryranksparingmodeisenabled.
ThefollowingdiagramliststheDIMMconnectorsoneachmemorychannel.
Figure33.Connectorsoneachmemorychannel
Followtheinstallationsequenceforranksparingmode:
•Installatleastonequad-rankDIMMinachannel.
•Installatleasttwosingle-rankordual-rankDIMMsinachannel.
Table9.MemoryranksparingmodeDIMMpopulationsequence
NumberofDIMMs
Numberofinstalled
microprocessorDIMMconnector
FirstpairofDIMMs
11,2
SecondpairofDIMMs
14,5
ThirdpairofDIMMs
18,9
FourthpairofDIMMs
111,12
FifthpairofDIMMs
17,10
SixthpairofDIMMs
13,6
SeventhpairofDIMMs
213,14
EighthpairofDIMMs
216,17
NinthpairofDIMMs
220,21
TenthpairofDIMMs
223,24
EleventhpairofDIMMs
219,22
TwelfthpairofDIMMs
215,18
Note:DIMMconnectors3,6,7,10,15,18,19,and22arenotusedinmemoryranksparingmodewhenUDIMMs
areinstalledintheserver.
Installingamemorymodule
Usethisinformationtoinstallamemorymodule.
Step1.Readthesafetyinformationthatbeginson“Safety”onpagevand“Installationguidelines”
onpage34
.
Step2.Turnofftheserverandperipheraldevicesanddisconnectthepowercordsandallexternalcables,
ifnecessary.
48LenovoSystemx3650M4HDInstallationandServiceGuide