IBM System x3610 Problem Determination And Service Manual page 71

v Each DIMM in a pair must be the same size, speed, type, and technology to
ensure that the server will operate correctly.
DIMM Population Rule
Notes:
1. Single rank 4 GB memory is not supported.
2. A rank is defined as an area or block of 64 bits that is created by using some or
all of the chips on a DIMM. For an ECC DIMM, a memory rank is a block of 72
data bits (64 bits plus 8 ECC bits).
Table 9. DIMM Configurations
Configuration Channel 0
DIMM 6
1 X
2 Single rank Single rank Single rank Single rank
3 Single rank Single rank Single rank Single rank Single rank Single rank
DIMM installation priority:
1. Channel 0 DIMM 2 or channel 1 DIMM 1
2. Channel 0 DIMM 4 or channel 1 DIMM 3
3. Channel 0 DIMM 6 or channel 1 DIMM 5
To install a DIMM, complete the following steps.
DIMM 5
Channel 1
DIMM 3
DIMM 1
DIMM 6
Channel 0
DIMM 4
DIMM 2
Channel 1 Channel 0
DIMM 5 DIMM 4
X Dual rank
Chapter 4. Removing and replacing server components
Channel 1 Channel 0
DIMM 3 DIMM 2
Dual rank Dual rank
Dual rank
Channel 1
DIMM 1
Dual rank
Dual rank
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