Lenovo ThinkSystem SR650 Series Setup Manual page 147

Table 10. Independent mode with two processors (continued)
Total
DIMMs 24 23 22 21 20 19 18 17 16 15 14 13
11 22
12 24 22
13 24 22
14 24 22
15 24 22
16 22 21 20 19 18 17 16 15
17 22 21 20 19 18 17 16 15
18 24 22
19 24 22
20 22 21 20 19 18 17 16 15 14 13
21 24 22
22 24 22 21 20 19 18 17 16 15 14 13
23 24 22 21 20 19 18 17 16 15 14 13
24 24 23 22 21 20 19 18 17 16 15 14 13
Mirroring mode
In mirroring mode, each memory module in a pair must be identical in size and architecture. The channels are
grouped in pairs with each channel receiving the same data. One channel is used as a backup of the other,
which provides redundancy.
Note: All memory modules to be installed must be the same type with the same capacity, frequency,
voltage, and ranks.
The following table shows the memory module population sequence for mirroring mode when only one
processor (Processor 1) is installed.
Table 11. Mirroring mode with one processor
Total
DIMMs 12 11
2
3
4
6 12
8
9 12
12 12 11
The following table shows the memory module population sequence for mirroring mode when two
processors (Processor 1 and Processor 2) are installed.
Processor 2
20 17 15
20 17 15
20 17 15
20 18 17 16 15
20 18 17 16 15
20 18 17 16 15 14 13
20 18 17 16 15 14 13
20 18 17 16 15 14 13
10 9 8
10 8
10 8
10 9 8
10 8
10 9 8
12 11 10 9 8
13 12 10 8
13 12 10 8
13 12 10 8
12 10 8
10 9 8
10 9 8
12 10 8
12 10 8
10 9 8
10 9 8
12 11 10 9 8
12 10 9 8
12 11 10 9 8
12 11 10 9 8
Processor 1
7 6 5
5
5
5
5
7 6 5
6 5
7 6 5
Processor 1
7 6 5 4 3 2
5 3
5 3
6 5 4 3
6 5 4 3
7 6 5 4 3
7 6 5 4 3
6 5 4 3 2
6 5 4 3 2
7 6 5 4 3 2
7 6 5 4 3 2
7 6 5 4 3 2
7 6 5 4 3 2
7 6 5 4 3 2
7 6 5 4 3 2
4 3 2
3
3
3
3
4 3
4 3 2
4 3 2
.
Chapter 3 Server hardware setup
Total
1 DIMMs
1 11
1 12
13
14
15
16
1 17
1 18
1 19
1 20
1 21
1 22
1 23
1 24
Total
1 DIMMs
2
1 3
4
1 6
8
1 9
1 12
143