Lenovo ThinkServer RD120 Manuel d'utilisateur télécharger pdf (Page 25)

Table 2. DIMM installation sequence

Pair DIMM connectors

1 1 and 4

2 7 and 10

3 2 and 5

4 8 and 11

5 3 and 6

6 9 and 12

Note: When only one pair of DIMMs is installed in the server and the BIOS code

level is version 1.04 (GGE127A) or later, you can improve performance by

installing the DIMMs in connectors 1 and 7 instead of 1 and 4. However, because

the connectors in the pair are not on the same memory branch (see the following

illustration), Advanced ECC memory protection is disabled.

DIMM 1

DIMM 2

DIMM 3

DIMM 4

DIMM 5

DIMM 6

DIMM 7

DIMM 8

DIMM 9

Channel 0

Channel 1

Channel 2

DIMM 10

DIMM 11

DIMM 12

Channel 3

Branch 1

Branch 0

v Each DIMM in a pair must be the same size, speed, type, and technology to

ensure that the server will operate correctly.

v You can configure the server to use memory mirroring. Memory mirroring stores

data in two pairs of DIMMs simultaneously. If a failure occurs, the memory

controller switches from the active pair to the mirroring pair. See “Memory

mirroring” on page 13 for more information about memory mirroring and the

DIMM installation sequence that is required.

Chapter 2. Installing optional devices 11

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Lenovo ThinkServer RD120 Manuel d'utilisateur Page 25