Lenovo ThinkSystem SR950 Setup Manual page 145
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Installation order: memory sparing with three processors
Memory module installation order for memory sparing with three processors installed in the server.
The following tables show the DIMM population sequence for memory sparing 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)
Note: An even number of DIMMs is required for memory sparing.
Table 116. Memory sparing with three processors (Processors 1 and 2, 6 to 24 total DIMMs installed in server)
Total
DIMMs 1
2
3
4
6
8
10
12
14
16
18
3
4
20
3
4
22
3
4
24
Related DIMM population sequences for three processor systems:
• Processor 1 and 2 DIMM population sequences for 26 to 48 DIMMs, see Table 117 "Memory sparing with
three processors (Processors 1 and 2, 26 to 48 total DIMMs installed in server)" on page 142.
• To continue populating processor 3 DIMMs for a system with 6 to 24 DIMMs, see Table 118 "Memory
sparing with three processors (Processor 3, 6 to 24 total DIMMs installed in server)" on page 143.
Processor 1
5
6
7
8
9
10 11 12
7
8
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
8
9
10
5
6
7
8
9
10
5
6
7
8
9
10
5
6
7
8
9
10
5
6
7
8
9
10
5
6
7
8
9
10
Processor 2
13 14 15 16 17 18
19 20 21 22 23 24 DIMMs
19 20
19 20
17 18
19 20
17 18
19 20
17 18
19 20
17 18
19 20 21 22
17 18
19 20 21 22
17 18
19 20 21 22
15 16 17 18
19 20 21 22
15 16 17 18
19 20 21 22
Chapter 3
Total
6
8
10
12
14
16
18
20
22
24
.
Server hardware setup
141
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