Lenovo ThinkSystem SR950 Setup Manual page 105
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Installation order: memory mirroring with two processors
Memory module installation order for memory mirroring with two processors installed in the server.
The following table shows the DIMM population sequence for memory mirroring when two processors are
installed.
• Processors 1 and 2 are installed in the lower system board of the lower 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 78. Memory mirroring with two processors, 4 to 24 total DIMMs installed in server
Total
DIMMs 1
2
3
4
4
5
6
3
7
3
8
1
3
9
1
3
10
11 DIMM memory mirroring configuration is not
11
1
3
12
1
3
13
1
3
14
1
3
15
3
4
16
1
3
17
1
3
18
19 DIMM memory mirroring configuration is not
19
1
2
3
4
20
1
2
3
4
21
22 DIMM memory mirroring configuration is not
22
23 DIMM memory mirroring configuration is not
23
1
2
3
4
24
Processor 1
5
6
7
8
9
10 11 12
8
10
8
10
8
10
5
8
10
5
8
10
5
8
10
5
8
10
supported.
5
8
10
5
7
8
9
10 11 12
5
8
10
5
7
8
9
10 11 12
5
6
7
8
9
10
5
7
8
9
10 11 12
5
7
8
9
10 11 12
supported.
5
6
7
8
9
10 11 12
5
6
7
8
9
10 11 12
supported.
supported.
5
6
7
8
9
10 11 12
Processor 2
13 14 15 16 17 18
12
12
15
17
12
12
15
17
11 DIMM memory mirroring configuration is not
supported.
12
13
15
17
15
17
12
15 16 17 18
13
15
17
15 16 17 18
15 16 17 18
13
15
17
19 DIMM memory mirroring configuration is not
supported.
15 16 17 18
13
15
17
22 DIMM memory mirroring configuration is not
supported.
23 DIMM memory mirroring configuration is not
supported.
13 14 15 16 17 18
Chapter 3
Total
19 20 21 22 23 24 DIMMs
20
22
20
22
20
22
24
20
22
24
20
22
20
22
24
20
22
20
22
24
20
22
19 20 21 22
20
22
24
19 20 21 22
19 20 21 22
19 20 21 22 23 24
19 20 21 22
19 20 21 22 23 24
19 20 21 22 23 24
.
Server hardware setup
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
101
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