IBM X3610 Installation Manual page 28

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
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:
1. Read the safety information that begins on page v and "Installation guidelines"
2. Turn off the server and peripheral devices, and disconnect the power cord and
3. Remove the cover.
14
IBM System x3610 Type 7942: Installation Guide
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 4. 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
on page 9.
all external cables.
Attention: To avoid breaking the retaining clips or damaging the DIMM
connectors, open, and close the clips gently.
Channel 1 Channel 0
DIMM 5 DIMM 4
X Dual rank
DIMM connector
Channel 1 Channel 0
DIMM 3 DIMM 2
Dual rank Dual rank
Dual rank
Channel 1
DIMM 1
Dual rank
Dual rank