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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 on the system board.
• Processors 3 and 4 are installed in the processor and memory expansion tray.
Notes:
1. When adding one or more DIMMs during a memory upgrade, you might need to remove some DIMMs
that are already installed to new locations.
2. An even number of DIMMs is required for memory sparing.
3. This mode only applies to single-rank memory modules. When installing DIMMs consisting of more than
two ranks, including dual-rank, quad-rank or octal-rank memory modules, refer to
memory mode" on page 50
Table 47. Memory sparing with four processors (processor 1 and 2)
Total
DIMMs 1
2
3
4
8
10
12
14
16
18
20
22
24
3
4
26
3
4
28
3
4
30
3
4
32
3
4
34
3
4
36
3
4
38
3
4
40
1
2
3
4
42
1
2
3
4
44
1
2
3
4
46
1
2
3
4
48
Related DIMM population sequences for four processor systems:
• To continue populating processor 3 and 4 DIMMs, see
(processor 3 and 4)" on page
ThinkSystem SR850P Setup Guide
62
instead.
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
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 11 12
5
6
7
8
9
10 11 12
5
6
7
8
9
10 11 12
5
6
7
8
9
10 11 12
5
6
7
8
9
10 11 12
5
6
7
8
9
10 11 12
5
6
7
8
9
10 11 12
10 11 12
5
6
7
8
9
63.
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
17 18
19 20 21 22
15 16 17 18
19 20 21 22
15 16 17 18
19 20 21 22
15 16 17 18
19 20 21 22
15 16 17 18
19 20 21 22
15 16 17 18
19 20 21 22 23 24
15 16 17 18
19 20 21 22 23 24
15 16 17 18
19 20 21 22 23 24
15 16 17 18
19 20 21 22 23 24
13 14 15 16 17 18
19 20 21 22 23 24
13 14 15 16 17 18
19 20 21 22 23 24
13 14 15 16 17 18 19 20 21 22 23 24
Table 48 "Memory sparing with four processors
"Independent
Total
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
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