Lenovo ThinkSystem ST650 V2 - Page 83

Memory Mode with one processor
Table 31. Memory Mode with one processor
• D1: 16 GB RDIMM
• D2: 16 GB RDIMM or 32 GB RDIMM
• P: 128 GB Persistent Memory Module (PMEM)
Configuration
Processor 1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
4 PMEMs and 4
DIMMs
P D2 P D2 D2 P D2 P
4 PMEMs and 8
DIMMs
D1 D1 P D1 D1 P P D1 D1 P D1 D1
8 PMEMs and 8
DIMMs
D2 P D2 P D2 P D2 P P D2 P D2 P D2 P D2
Memory Mode with two processors
Table 32. Memory Mode with two processors (processor 1)
• D1: 16 GB RDIMM
• D2: 16 GB RDIMM or 32 GB RDIMM
• P: 128 GB Persistent Memory Module (PMEM)
Configuration
Processor 1
1 2 3 4
5 6 7 8 9 10 11 12 13 14 15 16
8 PMEMs and 8
DIMMs
P D2 P D2 D2 P D2 P
8 PMEMs and 16
DIMMs
D1 D1 P D1 D1 P P D1 D1 P D1 D1
16 PMEMs and 16
DIMMs
D2 P D2 P D2 P D2 P P D2 P D2 P D2 P D2
Table 33. Memory Mode with two processors (processor 2)
Configuration
Processor 2
17 18 19 20 21 22 23 24
25 26 27 28 29 30 31 32
8 PMEMs and 8
DIMMs
P D2 P D2 D2 P D2 P
8 PMEMs and 16
DIMMs
D1 D1 P D1 D1 P P D1 D1 P D1 D1
16 PMEMs and 16
DIMMs
D2 P D2 P D2 P D2 P P D2 P D2 P D2 P D2
Mixed Memory Mode
In this mode, some percentage of PMEM capacity is directly accessible to specific applications (App Direct),
while the rest serves as system memory. The App Direct part of PMEM is displayed as persistent memory,
while the rest of PMEM capacity is displayed as system memory. DRAM DIMMs act as cache in this mode.
Note: When adding one or more DIMMs during a memory upgrade, you might need to remove some DIMMs
that are already installed to new locations.
Chapter 4. Server hardware setup 75