Lenovo ThinkSystem SR950 - Page 207

DCPMM Installation order: Memory mode with four processors
When implementing Memory mode, any supported DIMMs in any capacity can be installed. However, you
should consider using DIMMs that are greater than 32 GB.
When four processors are installed in the server:
• Processors 1 and 2 are installed in the lower system board of the lower compute tray.
• Processors 3 and 4 are installed in the upper system board of the lower compute tray.
Several configurations are supported with implementing Memory mode with four processors:
• 6 DCPMMs/6 DRAM DIMMs per processor
• 4 DCPMMs/6 DRAM DIMMs per processor
• 2 DCPMMs/6 DRAM DIMMs per processor
• 2 DCPMMs/4 DRAM DIMMs per processor
6 DCPMMs/ 6 DRAM DIMMs per processor
Table 201. Memory mode with 6 DCPMMs and 6 DRAM DIMMs per processor (4 processors)
In the table below:
• P = DCPMM
• D = DRAM DIMM
Processor 1 Processor 2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
D P D P D P P D P D P D D P D P D P P D P D P D
Processor 3 Processor 4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
D P D P D P P D P D P D D P D P D P P D P D P D
4 DCPMMs/ 6 DRAM DIMMs per processor
Table 202. Memory mode with 4 DCPMMs and 6 DRAM DIMMs per processor (4 processors)
In the table below:
• P = DCPMM
• D = DRAM DIMM
Processor 1 Processor 2
1
2 3
4 5
6
7
8 9 10
11
12 13
14 15
16
17
18 19 20 21 22 23 24
D D P D P P D P D D D D P D P P D P D D
Processor 3 Processor 4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
D D P D P P D P D D D D P D P P D P D D
2 DCPMMs/ 8 DRAM DIMMs per processor
Table 203. Memory mode with 2 DCPMMs and 8 DRAM DIMMs per processor (4 processors)
In the table below:
• P = DCPMM
Chapter 3. Server hardware setup 203