Installation order: memory mirroring with three processors
Memory module installation order for memory mirroring with three processors installed in the server.
The following tables show the DIMM population sequence for memory mirroring when three processors are
installed.
• Processors 1 and 2 are installed in the lower system board of the lower compute tray.
• Processor 3 is installed in the upper system board of the lower compute tray or in the upper compute tray
(processor slot 4 or processor slot 6).
Note: When adding one or more DIMMs during a memory upgrade, you might need to move other DIMMs
that are already installed to new locations.
Table 79. Memory mirroring with three processors (Processors 1 and 2, 6 to 24 total DIMMs installed in server)
Total Processor 1 Processor 2 Total
DIMMs 1 2 3 4
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 DIMMs
6 8 10 20 22 6
7 8 10 12 20 22 7
8 8 10 12 20 22 24 8
9 8 10 12 20 22 24 9
10 3 5 8 10 20 22 24 10
11 3 5 8 10 15 17 20 22 11
12 3 5 8 10 15 17 20 22 12
13 13 DIMM memory mirroring configuration is not
supported
13 DIMM memory mirroring configuration is not
supported
13
14 1 3 5 8 10 12 15 17 20 22 14
15 1 3 5 8 10 12 13 15 17 20 22 24 15
16 1 3 5 8 10 12 13 15 17 20 22 16
17
17 DIMM memory mirroring configuration is not
supported.
17 DIMM memory mirroring configuration is not
supported.
17
18 1 3 5 8 10 12 13 15 17 20 22 24 18
19 19 DIMM memory mirroring configuration is not
supported.
19 DIMM memory mirroring configuration is not
supported.
19
20 3 4 5 6 7 8 9 10 13 15 17 20 22 24 20
21 21 DIMM memory mirroring configuration is not
supported.
21 DIMM memory mirroring configuration is not
supported.
21
22 3 4 5 6 7 8 9 10 15 16 17 18 19 20 21 22 22
23 23 DIMM memory mirroring configuration is not
supported.
23 DIMM memory mirroring configuration is not
supported.
23
24 3 4 5 6 7 8 9 10 15 16 17 18 19 20 21 22 24
Related DIMM population sequences for three processor systems:
• Processor 1 and 2 DIMM population sequences for 25 to 36 DIMMs, see Table 80 “Memory mirroring with
three processors (Processors 1 and 2, 25 to 36 total DIMMs installed in server)” on page 103.
• To continue populating processor 3 for a system with 6 to 24 DIMMs, see Table 81 “Memory mirroring
with three processors (Processor 3, 6 to 24 total DIMMs installed in server)” on page 104.
102
ThinkSystem SR950 Setup Guide
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