IBM System x3610 User Manual page 48

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 (see "Removing the cover" on page 21).
4. Remove the air duct (see "Removing the air duct" on page 22).
5. Open the retaining clip on each end of the DIMM connector.
6. Touch the static-protective package that contains the DIMM to any unpainted
7. Turn the DIMM so that the DIMM keys align correctly with the connector.
8. Insert the DIMM into the connector by aligning the edges of the DIMM with the
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IBM System x3610 Type 7942: User's 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 7. 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 17.
all external cables.
Attention: To avoid breaking the retaining clips or damaging the DIMM
connectors, open and close the clips gently.
metal surface on the server. Then, remove the DIMM from the package.
slots at the ends of the DIMM connector. Firmly press the DIMM straight down
into the connector by applying pressure on both ends of the DIMM
simultaneously. The retaining clips snap into the locked position when the DIMM
is firmly seated in the connector.
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