Lenovo 7X19 Setup Manual page 90

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Memory Mode
In this mode, DCPMMs act as volatile system memory, while DRAM DIMMs act as cache.
Installation order: Memory Mode with two processors
Memory module installation order for DCPMM Memory Mode with two installed processors.
Table 64. Memory population in Memory Mode with two processors
• D1: DRAM DIMMs of 16 or 32 GB
• D2: DRAM DIMMs of 32 GB or larger capacity
• P: DC Persistent Memory Module (DCPMM)
Configuration
1
2
3
4 DCPMMs
D2
P
and 8 DIMMs
4 DCPMMs
D1
D1
and 12 DIMMs
8 DCPMMs
D2
D2 P D2 P
and 12 DIMMs
D2 P D2 P D2 P
12 DCPMMs
and 12 DIMMs
Table 65. Supported DCPMM capacity in Memory Mode with two processors
Total
Total
Processor Family
PMMs
DIMMs
4
8
4
12
8
12
12
12
ThinkSystem SR850 Setup Guide
82
Processor 1
4
5
6
7
8
9
10 11 12
D2
D2
D2
D1 P
P D1
D1
P D2 P D2
P D2 P D2 P D2 D2 P D2 P D2 P
128 GB DCPMM
L
M
Other
L
M
Other
L
M
Other
L
M
Other
13 14 15 16 17 18
D2
P
P
D1 D1
D1
D2 D2
D2 P D2 P
256 GB DCPMM
Processor 2
19 20 21 22 23 24
D2
D2
D2
D1 P
P D1
D1
P D2 P D2
P D2 P D2 P D2
512 GB DCPMM
P
D1
D2

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