Lenovo System x3250 M4 - Page 171

•ThefollowingtableliststhemaximumDIMMpopulationusingrankedUDIMMs.
Table32.MaximummemorypopulationusingrankedUDIMMs(dependingonyourmodel)
NumberofUDIMMsDIMMtypeSizeTotalmemory
4
Single-rankUDIMMs1GB4GB
4Dual-rankUDIMMs
2GB8GB
4Dual-rankUDIMMs
4GB16GB
4Dual-rankUDIMMs
8GB32GB
•ThefollowingtableshowstheUDIMMmemorypopulationruletooptimizethesystemperformance.
Table33.UDIMMpopulationrule
DIMMconnector1DIMMconnector2DIMMconnector3DIMMconnector4
PopulatedEmptyEmptyEmpty
PopulatedEmptyPopulatedEmpty
PopulatedPopulatedPopulatedPopulated
InstallingaDIMM
UsethisinformationtoinstallaDIMM.
Readthesafetyinformationin“Safety”onpagevand“Installationguidelines”onpage33.
Ifyouarereplacingaservercomponentintheserver,youneedtoturnofftheserverandperipheraldevices,
anddisconnectthepowercordsandallexternalcables.
Attention:Staticelectricitythatisreleasedtointernalservercomponentswhentheserverispoweredon
mightcausetheservertohalt,whichmightresultinthelossofdata.Toavoidthispotentialproblem,
alwaysuseanelectrostatic-dischargewriststraporothergroundingsystemwhenyouworkinsidethe
serverwiththepoweron.
ThefollowingillustrationshowsthelocationoftheDIMMconnectorsonthesystemboard.
Chapter6.Removingandreplacingcomponents157