Table 11. Connectors on each memory channel (continued)
Memory channel
DIMM connectors
Channel 1
4, 5, 6, 12, 13, 14
Channel 2
7, 8, 15, 16
The following illustration shows the memory connector layout that is associated
with each microprocessor. For example, DIMM connectors 9, 10, 11, 12, 13, 14,
15, and 16 (DIMM connectors are shown underneath the boxes) are associated
with microprocessor 2 slot (CPU2) and DIMM connectors 1, 2, 3, 4, 5, 6, 7, and
8 are associated with microprocessor 1 slot (CPU1). The numbers within the
boxes indicates the installation sequence of the DIMM pairs. For example, the
first DIMM pair (indicated within the boxes by ones (1)) should be installed in
DIMM connectors 3 and 6, which is associated with microprocessor 1 (CPU1).
Note:
You can install DIMMs for microprocessor 2 as soon as you install
microprocessor 2; you do not have to wait until all of the DIMM slots for
microprocessor 1 are filled.
The following table lists the installation sequence for installing DIMMs in
memory-mirroring mode.
Table 12. Memory-mirroring mode DIMM population sequence
DIMMs
Number of installed
microprocessors
DIMM connector
First pair of DIMMs
1
3, 6
Second pair of DIMMs
1
2, 5
Third pair of DIMMs
1
1, 4
Fourth pair of DIMMs
2
14, 11
Fifth pair of DIMMs
2
13, 10
Sixth pair of DIMMs
2
12, 9
Note:
DIMM connectors 7, 8, 15, and 16 are not used in memory-mirroring mode.
v
When you install or remove DIMMs, the server configuration information
changes. When you restart the server, the system displays a message that
indicates that the memory configuration has changed.
The following illustration shows the location of the DIMMs connectors on the system
board.
Figure 2. Memory connectors associated with each microprocessor for memory mirroring
Chapter 2. Installing optional devices
55
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