Lenovo ThinkSystem SR650 Series Setup Manual page 149
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Table 13. Rank sparing mode with one processor (continued)
Total
DIMMs
12
11
10
12
12
11
The following table shows the memory module population sequence for rank sparing mode when two
processors (Processor 1 and Processor 2) are installed.
Table 14. Rank sparing mode with two processors
Total
DIMMs 24 23 22 21 20 19 18 17 16 15 14 13
4
6
8
10
12
14
16
22 21 20 19 18 17 16 15
18
22 21 20 19 18 17 16 15
20
22 21 20 19 18 17 16 15 14 13
22
22 21 20 19 18 17 16 15 14 13
24
24 23 22 21 20 19 18 17 16 15 14 13
DCPMM and DRAM DIMM installation order
For DCPMM, the following memory modes are available:
• "App Direct Mode" on page 146
• "Memory Mode" on page 149
• "Mixed Memory Mode" on page 151
Notes:
• Before installing DCPMMs and DRAM DIMMs, refer to "DC Persistent Memory Module (DCPMM) setup"
on page 138 and make sure to meet all the requirements.
• To verify if the presently installed processors support DCPMMs, examine the four digits in the processor
description. Only the processor with description meeting both of the following requirements support
DCPMMs.
– The first digit is 5 or a larger number.
– The second digit is 2.
Example: Intel Xeon 5215L and Intel Xeon Platinum 8280M
Note: The only exception to this rule is Intel Xeon Silver 4215, which also supports DCPMM.
• DCPMMs are supported only by Intel Xeon SP Gen 2. For a list of supported processors and memory
modules, see
http://www.lenovo.com/us/en/serverproven/
10
9
8
10
9
8
10
9
8
Processor 2
18 17
18 17
20 19 18 17
20 19 18 17
20 19 18 17 16 15
20 19 18 17 16 15
Processor 1
7
6
5
7
6
5
7
6
5
12 11 10
9
8
8
8
8
8
10
9
8
10
9
8
10
9
8
10
9
8
12 11 10
9
8
12 11 10
9
8
4
3
2
4
3
2
4
3
2
Processor 1
7
6
5
4
3
2
6
5
7
6
5
7
6
5
7
6
5
4
3
7
6
5
4
3
7
6
5
4
3
7
6
5
4
3
7
6
5
4
3
2
7
6
5
4
3
2
7
6
5
4
3
2
7
6
5
4
3
2
.
Chapter 3
Server hardware setup
Total
1
DIMMs
1
10
1
12
Total
1 DIMMs
4
6
8
10
12
14
16
1
18
1
20
1
22
1
24
145
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