Dell EMC PowerEdge MX740c - Mode-Specific Guidelines

Table 7. 2 socket DCPMM configurations (continued)
No. of
CPUs
in the
Server
DCPM
M
Populat
ion
DRAM
Populat
ion
DRAM
Capaci
ty
(GB)
DCPM
M
Capaci
ty
(GB)
Operating
system
Memory in
Memory
Mode (GB)
Total
Memory
(GB)
Total
Memor
y per
CPU
(GB)
Ratio
DRAM to
Optane
Memory
Requi
res
an M
or L
CPU
Suppor
ted in
App
Direct
Mode
Suppor
ted in
Memor
y Mode
2 128 GB x
12
128 GB x
12
1,536 1,536 N/A 3,072 1,536 1 : 1 L SKU Yes No
2 512 GB
x 8
32 GB x
12
384 4,096 4,096 4,480 2,240 1 : 10.7 L SKU Yes Yes
2 512 GB
x 12
32 GB x
12
384 6,144 6,144 6,528 3,264 1 : 16 L SKU Yes Yes
2 512 GB
x 8
64 GB x
12
768 4,096 4,096 4,864 2,432 1 : 5.3 L SKU Yes Yes
2 512 GB
x 12
64 GB x
12
768 6,144 6,144 6,912 3,456 1 : 8 L SKU Yes Yes
2 512 GB
x 12
128 GB x
12
1,536 6,144 6,144 7,680 3,840 1 : 4 L SKU Yes Yes
2 256 GB
x 8
16 GB x
12
192 2,048 2,048 2,240 1,120 1 : 10.7 L SKU Yes Yes
2 256 GB
x 8
32 GB x
12
384 2,048 2,048 2,432 1,216 1 : 5.3 L SKU Yes Yes
2 256 GB
x 12
32 GB x
12
384 3,072 3,072 3,456 1,728 1 : 8 L SKU Yes Yes
2 256 GB
x 8
64 GB x
12
768 2,048 N/A 2,816 1,408 1 : 2.7 L SKU Yes No
2 256 GB
x 12
64 GB x
12
768 3,072 3,072 3,840 1,920 1 : 4 L SKU Yes Yes
2 256 GB
x 12
128 GB x
12
1,536 3,072 N/A 4,608 2,304 1 : 2 L SKU Yes No
NOTE: There are limited configurations available for Dual Socket Servers with only one CPU populated.
Mode-specific guidelines
The configurations allowed depend on the memory mode selected in the System BIOS.
Table 8. Memory operating modes
Memory Operating Mode Description
Optimizer Mode The Optimizer Mode if enabled, the DRAM controllers
operate independently in the 64-bit mode and provide
optimized memory performance.
NOTE: DCPMM supports only Optimizer mode.
Mirror Mode The Mirror Mode if enabled, the system maintains two
identical copies of data in memory, and the total available
system memory is one half of the total installed physical
memory. Half of the installed memory is used to mirror the
active memory modules. This feature provides maximum
reliability and enables the system to continue running even
during a catastrophic memory failure by switching over to the
mirrored copy. The installation guidelines to enable Mirror
Mode require that the memory modules be identical in size,
50 Installing and removing system components