Lenovo System x3500 M5 Type 5464 - Page 28

code(ECC)forDDR4-2133,DDR4(fourth-generationdouble-data-rate),synchronousdynamicrandom
accessmemory(SDRAM)DIMMs.
•Lightpathdiagnostics
LightpathdiagnosticsprovidesLEDstohelpyoudiagnoseproblems.Formoreinformationaboutlight
pathdiagnosticsandtheLEDs,see“LightpathdiagnosticsLEDs”onpage133
.
•Memorymirroring
Memorymirroringprovidesaredundantcopyofallcodeanddatathatareaddressableintheconfigured
memorymap.Throughthemicroprocessormemorycontrollerchipset,memorymirroringreplicates
andstoresdataacrossDIMMsontwoorfourmemorychannelssimultaneously.Ifafailureoccurs,
thememorycontrollerswitchesfromtheDIMMsontheprimarychanneltotheDIMMsonthebackup
channel.ToenablememorymirroringthroughtheSetuputility,selectSystemSettings→Memory→
MemoryMode→Mirroring.ForinformationaboutinstallingDIMMsformemorymirroring,see“Memory
moduleinstallation”onpage73
formoreinformation.
•Memorysparing
Theserversupportsmemorysparing.Memorysparingreservesmemorycapacityforfailoverinthe
eventofaDIMMfailure,andthereservedcapacityissubtractedfromthetotalavailablememory.
Memorysparingprovideslessredundancythanmemorymirroringdoes.Ifapredeterminedthreshold
ofcorrectableerrorsisreached,thecontentsofthefailingDIMMarecopiedtothesparememory,and
thefailingDIMMorrankisdisabled.ToenablememorysparingthroughtheSetuputility,selectSystem
Settings→Memory→MemoryMode→Sparing.ForinformationaboutinstallingDIMMsformemory
sparing,see“Memorymoduleinstallation”onpage73
.
•Multi-coreprocessors
TheserversupportsuptotwoIntelXeon™E5-2600seriesmulti-coremicroprocessors.Theserver
comeswithonlyonemicroprocessorinstalled.
•PCIadaptercapabilities
TheserverhassevenPCIinterfaceslots.See“Installinganadapter”onpage216
fordetailedinformation.
•Redundantconnection
TheadditionoftheoptionalEthernetdaughtercardprovidesfailovercapabilitytoaredundantEthernet
connectionwiththeapplicableapplicationinstalled.IfaproblemoccurswiththeprimaryEthernet
connectionandtheoptionalEthernetdaughtercardisinstalledontheserver,allEthernettrafficthatis
associatedwiththeprimaryconnectionisautomaticallyswitchedtotheoptionalredundantEthernet
daughtercardconnection.Iftheapplicabledevicedriversareinstalled,thisswitchingoccurswithout
datalossandwithoutuserintervention.
•Redundantcoolingandoptionalpowercapabilities
Theserversupportsamaximumoftwo550-wattor750-wattor900-watthot-swappowersuppliesand
fourhot-swapfans,whichprovideredundancyandhot-swapcapabilityforatypicalconfiguration.The
redundantcoolingbythefansintheserverenablescontinuedoperationifoneofthefansfails.Theserver
comeswithone750-wattor900-watthot-swappowersupplyandtwofans.
Youmustinstallfan3&4whenyouinstallthesecondmicroprocessorintheserver.Youcanorderthe
optionaltwofansforcoolingredundancy.Youcanorderthesecondoptionalpowersupplyforpower
redundancy.
Notes:
1.Youcannotmix550-watand750-wattand900-wattpowersuppliesintheserver.
2.Theserverisnotrunninginpowerredundantmodewithtwo225WGPUsinstalled,two900-watt
powersuppliesarerequired.
•Remotepresenceandblue-screencapturefeatures
12Systemx3500M5InstallationandServiceGuide