Users Guide
Table 7. Quad socket DCPMM population (continued)
CPU 0, CPU 1, CPU 2 and CPU 3
Channel 2 Channel 1 Channel 0 Channel 0 Channel 1 Channel 2
DCP
MM
DRAM A3,
B3,
C3
A9,
B9,
C9
A2, B2,
C2
A8,
B8,
C8
A1,
B1, C1
A7,
B7,
C7
A10,
B10,
C10
A4, B4,
C4
A11,
B11,
C11
A5,
B5,
C5
A12,
B12,
C12
A6,
B6,
C6
256G
B x 8
32GB x
12
DRAM DRAM DCPM
M
DRAM DCP
MM
DCPM
M
DRAM DCPM
M
DRAM DRAM
256G
B x 12
32GB x
12
DRAM DCPM
M
DRAM DCPM
M
DRAM DCP
MM
DCPM
M
DRAM DCPM
M
DRAM DCPM
M
DRAM
256G
B x 8
64GB x
12
DRAM DRAM DCPM
M
DRAM DCP
MM
DCPM
M
DRAM DCPM
M
DRAM DRAM
256G
B x 12
64GB x
12
DRAM DCPM
M
DRAM DCPM
M
DRAM DCP
MM
DCPM
M
DRAM DCPM
M
DRAM DCPM
M
DRAM
256G
B x 12
128GB
x 12
DRAM DCPM
M
DRAM DCPM
M
DRAM DCP
MM
DCPM
M
DRAM DCPM
M
DRAM DCPM
M
DRAM
CPU type and maximum memory limits
Table 8. CPU type and maximum memory limits
CPU type Maximum memory supported
(Includes voltaile and persistent memory capacity)
All CPU SKUs 1 TB per CPU socket
M SKUs 2 TB per CPU socket
L SKUs 4.5 TB per CPU socket
DCPMM mixing and population rules
This section has general rules for DIMM mixing and population.
Each system must contain only one capacity of DCPMM. If you mix DCPMM capacities, an F1/F2 warning message is displayed.
This is not a supported configuration and must not be populated. The table DCPMM configurations replace the following rules:
Mixing rules
● DCPMM can be mixed with RDIMM, LRDIMM, and 3DS LRDIMM.
● Mixing DDR4 DIMM types (RDIMM, LRDIMM, 3DS LRDIMM), within a channel, iMC, socket, or across sockets are not
supported.
● x4 and x8 DDR4 DIMMs can be mixed within a channel.
● Mixing DCPMM operating modes (App-direct, Memory mode) is not supported.
Population rules
● Maximum of one DCPMM per channel.
● If only one DIMM is populated on a channel, it should always go to the first slot in that channel (white slot).
● If a DCPMM and a DDR4 DIMM are populated on the same channel, always plug DCPMM on the second slot (black slot).
● If the DCPMM is configured in Memory Mode, the recommended DDR4 to DCPMM capacity ratio is 1:4 to 1:16 per iMC.
Hardware
15