Lenovo ThinkSystem SR650 V2 Maintenance Manual page 278

Note: * Not-interleaved mode only. Does not support 100% interleaved mode.
Memory Mode
In this mode, PMEMs act as volatile system memory, while DRAM DIMMs act as cache. Ensure that the ratio
of DRAM DIMM capacity to PMEM capacity is between 1:4 and 1:16.
With one processor
Table 37. Memory Mode with one processor
• D: DRAM DIMMs
• P: Persistent Memory Module (PMEM)
Configuration
1
4 PMEMs and 4
P
DIMMs
4 PMEMs and 8 D
DIMMs
8 PMEMs and 8 D
DIMMs
With two processors
Table 38. Memory Mode with two processors
• D: DRAM DIMMs
• P: Persistent Memory Module (PMEM)
Configura-
tion
1 2
8 PMEMs
P
and 8
DIMMs
8 PMEMs D
and 16
DIMMs
16 PMEMs D
P
and 16
DIMMs
Configura-
tion
17 18
8 PMEMs
P
and 8
DIMMs
8 PMEMs D
and 16
DIMMs
16 PMEMs D
P
and 16
DIMMs
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2 3 4 5 6
D
P
D D
P
D D
P P P
3 4 5 6 7
D D
P
D D D
P
D D D
P P
19 20 21 22 23
D D
P
D D D
P
D D D
P P
DIMM slots
7 8 9 10 11
D D
D D
P P
D D
P P
DIMM slots
8 9 10 11
D
D
P P
D
P P P
DIMM slots
24 25 26 27
D
D
P P
D
P P P
12 13 14 15
D
P
D D
P
D D
P P P
12 13 14 15
D
P
D D
P
D D
P P
28 29 30 31
D
P
D D
P
D D
P P
16
P
D
D
16
P
D
D
32
P
D
D