Table3.Memorymoduleinstallationrulesforserverswithtwomicroprocessors(continued)
CPU1DIMMCPU2DIMM
A1A2A3B1B2B3
C1C2C3
D1D2D3A1A2A3B1B2B3
C1C2C3
D1D2D3
16
DIMMs
XXXXXXXXXXXXXXXX
24
DIMMs
XXXXXXXXXXXXXXXXXXXXXXXX
Thefollowingsectionexplainsthememorymoduleinstallationrulesinindependentmode,mirroringmode,
sparingmode,andlockstepmode.
Memorymoduleinstallationorderinindependentmode
Inindependentmode,theRASfeaturesarenotavailable.FormoreinformationabouttheRASfeatures,
refertotherelatedsectionin“Features”onpage7.
Notes:
•Allmemorymodulestobeinstalledmustbethesametype.
•Whenyouinstallmemorymoduleswithdifferentcapacity,installthememorymodulethathasthe
highestcapacityfirst.
Thefollowingtableexplainsthememorymoduleinstallationorderforserversthathaveonlyone
microprocessor(CPU1)installed.
Table4.Memorymoduleinstallationorderinindependentmodeforserverswithonemicroprocessor
CPU1DIMM
A1A2A3B1B2B3
C1C2C3
D1D2D3
DIMMinstallation
order
1
5
926103
7
114812
Thefollowingtableexplainsthememorymoduleinstallationorderforserversthathavetwomicroprocessors
(CPU1andCPU2)installed.
Table5.Memorymoduleinstallationorderinindependentmodeforserverswithtwomicroprocessors
CPU1DIMMCPU2DIMM
A1A2A3B1B2B3
C1C2C3
D1D2D3A1A2A3B1B2B3
C1C2C3
D1D2D3
DIMMinstallation
order
191731119
5
1321
7
152321018412206142281624
Memorymoduleinstallationorderinmirroringmode
Inmirroringmode,theservermaintainstwoidenticalcopiesofalldatainmemoryandtheRASfeaturesare
available.FormoreinformationabouttheRASfeatures,refertotherelatedsectionin“Features”onpage7
.
Notes:
•Allmemorymodulestobeinstalledmustbethesametypewiththesamecapacity,frequency,voltage,
andnumberofranks.
•Allmemorymodulesmustbeinstalledinpairs.
Chapter6.Replacinghardware81
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