
Memorymoduleinstallationorderinlockstepmode
Inlockstepmode,theRASfeaturesareavailable.FormoreinformationabouttheRASfeatures,refertothe
relatedsectionin“Features”onpage7.
Notes:
•Allmemorymodulestobeinstalledmustbethesametypewiththesamecapacity,frequency,voltage,
andnumberofranks.
•Allmemorymodulesmustbeinstalledinpairs.
Thefollowingtableexplainsthememorymoduleinstallationorderforserversthathaveonlyone
microprocessor(CPU1)installed.
Table10.Memorymoduleinstallationorderinlockstepmodeforserverswithonemicroprocessor
CPU1DIMM
A1A2A3B1B2B3
C1C2C3
D1D2D3
DIMMinstallation
order
13
5
13
5
246246
Thefollowingtableexplainsthememorymoduleinstallationorderforserversthathavetwomicroprocessors
(CPU1andCPU2)installed.
Table11.Memorymoduleinstallationorderinlockstepmodeforserverswithtwomicroprocessors
CPU1DIMMCPU2DIMM
A1A2A3B1B2B3
C1C2C3
D1D2D3A1A2A3B1B2B3
C1C2C3
D1D2D3
DIMMinstallation
order
1193311
55
13
77
152210441266148816
Installingamemorymodule
Attention:Donotopenyourserverorattemptanyrepairbeforereadingandunderstanding“Safetyinformation”
onpageiii
and“Guidelines”onpage67.
Beforeyoubegin,printalltherelatedinstructionsorensurethatyoucanviewthePDFversiononanother
computerforreference.
Notes:
•Ensurethatyouconsiderandfollowthememorymoduleinstallationruleswhenperformingtheoperation.
See“Memorymoduleinstallationrules”onpage79.
•Useanydocumentationthatcomeswiththememorymoduleandfollowthoseinstructionsinadditionto
theinstructionsinthistopic.
Toinstallamemorymodule,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandtheserver.Then,disconnectall
powercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtotheserver.
2.Prepareyourserver.See“Removingorextendingtheserverfromtherackcabinet”onpage69.
3.Removetheservercover.See“Removingtheservercover”onpage69.
4.Removethecoolingshroud.See“Removingandreinstallingthecoolingshroud”onpage72.
5.Locatethememoryslotsonthesystemboardandreadthememorymoduleinstallationrules.See
“Memorymoduleinstallationrules”onpage79.Removethememorydummyifnecessary.
Chapter6.Replacinghardware83
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