Lenovo ThinkSystem SR950 Setup Manual page 73

Installation order: independent memory mode with four processors
Memory module installation order for independent (non-mirroring) memory mode with four processors
installed in the server.
The following tables show the DIMM population sequence for independent memory mode 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: 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 49. Independent mode with four processors (Processors 1 and 2, 4 to 24 total DIMMs installed in server)
Total
DIMMs 1 2 3 4
4
5
6
7
8
9
10
11
12
3
13
3
14
3
15
3
16
3
17
3
18
3
19
3
20
1 3
21
1 3
22
1 3
23
1 3
24
Related DIMM population sequences for four processor systems:
• Processor 1 and 2 DIMM population sequences for 25 to 48 DIMMs, see Table 50 "Independent mode
with four processors (Processors 1 and 2, 25 to 48 total DIMMs installed in server)" on page 70.
• To continue populating processor 3 and 4 DIMMs for a system with 4 to 24 DIMMs, see Table 51
"Independent mode with four processors (Processors 3 and 4, 4 to 24 total DIMMs installed in server)" on
page 71.
Processor 1
5 6 7 8 9 10 11 12
8
5 8
5 8
5 8
5 8
5 8 10
5 8 10
5 8 10
5 8 10
5 8 10
5 8 10
5 8 10
5 8 10
5 8 10
5 8 10
5 8 10
5 8 10
5 8 10
5 8 10
5 8 10
5 8 10
Processor 2
13 14 15 16 17 18 19 20 21 22 23 24 DIMMs
17
17
17
17
17
17
17
17
15 17
15 17
15 17
12 15 17
12 15 17
12 15 17
12 15 17
12 15 17
12 13 15 17
12 13 15 17
12 13 15 17
20
20
20
20
20
20
20 22
20 22
20 22
20 22
20 22
20 22
20 22
20 22
20 22 24
20 22 24
20 22 24
20 22 24
20 22 24
20 22 24
20 22 24
.
Chapter 3 Server hardware setup
Total
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
69