Lenovo ThinkSystem SR550 Setup Manual page 63
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Independent mode
Independent mode provides high performance memory capability. You can populate all channels with no
matching requirements. Individual channels can run at different memory module timings, but all channels
must run at the same interface frequency.
The following table shows the memory module population sequence for independent mode when only one
processor (CPU1) is installed.
Note: If there are three identical memory modules to be installed for CPU1, and the three memory modules
have the same Lenovo part number, install the three memory modules in slots 1, 2, and 3.
Table 11. Independent mode with one processor
Total memory
modules
6
1
2
3
4
5
6
6
The following table shows the memory module population sequence for independent mode when two
processors (CPU1 and CPU2) are installed.
Notes:
• If there are three identical memory modules to be installed for CPU1, and the three memory modules have
the same Lenovo part number, install the three memory modules in slots 1, 2, and 3.
• If there are three identical memory modules to be installed for CPU2, and the three memory modules have
the same Lenovo part numbers, install the three memory modules in slots 7, 8, and 9.
Table 12. Independent mode with two processors
Total
memory
12
11
modules
2
3
4
5
6
7
11
8
11
9
11
10
Processor 1
5
4
4
4
5
4
5
4
5
4
Processor 2
10
9
8
9
9
10
9
10
9
10
9
8
10
9
8
10
9
8
10
9
8
10
9
8
3
2
3
3
3
2
3
2
3
2
3
2
Processor 1
7
6
5
4
4
4
4
4
5
4
5
4
5
4
7
5
4
Total memory
modules
1
1
1
3
2
1
3
3
3
3
2
3
2
3
2
3
2
3
2
1
3
2
1
.
Chapter 3
Server hardware setup
1
2
3
4
5
6
Total
memo-
ry
mod-
ules
2
3
4
5
6
7
8
9
10
59
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