Lenovo ThinkServer RD450 - Page 90

Table1.Memorymoduleinstallationrulesforserverswithonemicroprocessor
CPU1DIMM
A1A2B1B2
C1C2
D1D2
1DIMMX
2DIMMsXX
4DIMMsXXXX
8DIMMsXXXXXXXX
Thefollowingtableprovidesinformationaboutthememorymoduleinstallationrulesforserversthathave
twomicroprocessors(CPU1andCPU2)installed.The“X”markindicatesthememoryslotsintowhichthe
memorymodulesshouldbeinstalledindifferentsituations.
Table2.Memorymoduleinstallationrulesforserverswithtwomicroprocessors
CPU1DIMMCPU2DIMM
A1A2B1B2
C1C2
D1D2A1A2B1B2
C1C2
D1D2
2DIMMsXX
4DIMMsXXXX
8DIMMsXXXXXXXX
16DIMMsXXXXXXXXXXXXXXXX
Thefollowingsectionexplainsthememorymoduleinstallationrulesinindependentmode,mirroringmode,
sparingmode,andlockstepmode.
Memorymoduleinstallationorderinindependentmode
Inindependentmode,theRASfeaturesarenotavailable.FormoreinformationabouttheRASfeatures,
refertotherelatedsectionin“Features”onpage7.
Notes:
•Allmemorymodulestobeinstalledmustbethesametype.
•Whenyouinstallmemorymoduleswithdifferentcapacity,installthememorymodulethathasthe
highestcapacityfirst.
Thefollowingtableexplainsthememorymoduleinstallationorderforserversthathaveonlyone
microprocessor(CPU1)installed.
Table3.Memorymoduleinstallationorderinindependentmodeforserverswithonemicroprocessor
CPU1DIMM
A1A2B1B2
C1C2
D1D2
DIMMinstallationorder1
5
263
7
48
Thefollowingtableexplainsthememorymoduleinstallationorderforserversthathavetwomicroprocessors
(CPU1andCPU2)installed.
Table4.Memorymoduleinstallationorderinindependentmodeforserverswithtwomicroprocessors
CPU1DIMMCPU2DIMM
A1A2B1B2
C1C2
D1D2A1A2B1B2
C1C2
D1D2
DIMMinstallationorder19311
5
13
7
15210412614816
76ThinkServerRD450UserGuideandHardwareMaintenanceManual