Lenovo ThinkSystem SR950 Setup Manual page 149
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Installation order: memory sparing with four processors
Memory module installation order for memory sparing with four processors installed in the server.
The following tables show the DIMM population sequence for memory sparing when four processors are
installed.
• Processors 1 and 2 are installed in the lower system board of the lower compute tray.
• Processors 3 and 4 are installed in the upper system board of the lower compute tray or in the upper
compute tray.
Note: An even number of DIMMs is required for memory sparing.
Table 120. Memory sparing with four processors (Processors 1 and 2, 8 to 24 total DIMMs installed in server)
Total
DIMMs 1
2
3
4
8
10
12
14
16
18
20
22
24
Related DIMM population sequences for four processor systems:
• Processor 1 and 2 DIMM population sequences for 26 to 48 DIMMs, see Table 121 "Memory sparing with
four processors (Processors 1 and 2, 26 to 48 total DIMMs installed in server)" on page 146.
• To continue populating processor 3 and 4 DIMMs for a system with 8 to 24 DIMMs, see Table 122
"Memory sparing with four processors (Processors 3 and 4, 8 to 24 total DIMMs installed in server)" on
page 147.
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
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
17 18 19 20 21 22
17 18 19 20 21 22
17 18 19 20 21 22
Chapter 3
Total
8
10
12
14
16
18
20
22
24
.
Server hardware setup
145
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