Lenovo ThinkServer TD350 - Page 100

Thefollowingtableexplainsthememorymoduleinstallationorderforserversthathavetwomicroprocessors
(CPU1andCPU2)installed.
Table6.Memorymoduleinstallationorderinindependentmodeforserverswithtwomicroprocessors
CPU1DIMMCPU2DIMM
A1A2B1B2
C1C2
D1D2A1A2B1B2
C1C2
D1D2
DIMM
installationorder
19311
5
13
7
15210412614816
Memorymoduleinstallationorderinmirroringmode
Inmirroringmode,theservermaintainstwoidenticalcopiesofalldatainmemoryandtheRASfeaturesare
available.ForinformationabouttheRASfeatures,refertotherelatedsectionin“Features”onpage7.
Note:Allmemorymodulestobeinstalledmustbethesametype(LRDIMMorRDIMM).Itisalso
recommendedthatallmemorymoduleshavethesamefrequency,voltage,andnumberofranks.
Thefollowingtableexplainsthememorymoduleinstallationorderforserversthathaveonlyone
microprocessor(CPU1)installed.
Table7.Memorymoduleinstallationorderinmirroringmodeforserverswithonemicroprocessor
CPU1DIMM
A1A2B1B2
C1C2
D1D2
DIMM
installationorder
1
5
263
7
48
Thefollowingtableexplainsthememorymoduleinstallationorderforserversthathavetwomicroprocessors
(CPU1andCPU2)installed.
Table8.Memorymoduleinstallationorderinmirroringmodeforserverswithtwomicroprocessors
CPU1DIMMCPU2DIMM
A1A2B1B2
C1C2
D1D2A1A2B1B2
C1C2
D1D2
DIMM
installationorder
19210
5
13614311412
7
15816
Memorymoduleinstallationorderinsparingmode
Thesparingmodeprovidesmemoryredundancy.Inthismode,theRASfeaturesareavailable.For
informationabouttheRASfeatures,refertotherelatedsectionin“Features”onpage7
.
Note:Allmemorymodulestobeinstalledmustbethesametype(LRDIMMorRDIMM).Itisalso
recommendedthatallmemorymoduleshavethesamefrequency,voltage,andnumberofranks.
Yourserversupportsranksparingmode.Inranksparingmode,onerankofamemorymoduleworksasthe
sparerankfortheotherranksonthesamechannel.Thesparerankisnotavailableassystemmemory.To
enableranksparingmode,ensurethat:
•Atleastthreeranksareavailableinonechannel.
•Thecapacityofthesparerankmustbethesamewithorlargerthanthecapacityofotherrankswithin
thesamechannel.
86ThinkServerTD350UserGuideandHardwareMaintenanceManual