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Memory Mode

In this mode, DCPMMs act as volatile system memory, while DRAM DIMMs act as cache. Ensure that the ratio of DRAM DIMM capacity to DCPMM apacity is between 1:2 and 1:16.

Note
Before installing DCPMM, refer to Memory configuration and Configure DC Persistent Memory Module (DCPMM) for the requirements.

Memory Mode with one processor

Table 1. Memory Mode with one processor.

D: All supported DDR4 DIMM except 8GB 1Rx8 RDIMM

P: Only Data Center Persistent Memory Module (DCPMM) can be installed on the corresponding DIMM slots.

ConfigurationProcessor 1
121110987 654321
2 DCPMMs and 4 DIMMsPDDDDP
2 DCPMMs and 6 DIMMsD D DP PD D D
4 DCPMMs and 6 DIMMsDDPDPPDPDD
6 DCPMMs and 6 DIMMsDPDPDP PDPDPD
Table 2. Supported DCPMM capacity in Memory Mode with one processor
Total DCPMMsTotal DIMMsProcessor Family128 GB DCPMM256 GB DCPMM512 GB DCPMM
24L123
M123
Other12 
26L 12
M 12
Other 1 
46L124
M12 
Other1  
66L235
M23 
Other2  
Note
  1. Supported DIMM capacity is 16 GB.

  2. Supported DIMM capacity is 16 to 32 GB.

  3. Supported DIMM capacity is 16 GB to 64 GB.

  4. Supported DIMM capacity is 32 GB to 64 GB.

  5. Supported DIMM capacity is 32 GB to 128 GB.

Memory Mode with two processors

Table 3. Memory Mode with two processors.

D: All supported DDR4 DIMM except 8GB 1Rx8 RDIMM

P: Only Data Center Persistent Memory Module (DCPMM) can be installed on the corresponding DIMM slots.

ConfigurationProcessor 2Processor 1
242322212019 181716151413121110987 654321
4 DCPMMs and 8 DIMMsPDDDDPPDDDDP
4 DCPMMs and 12 DIMMsD D DP PD D DD D DP PD D D
8 DCPMMs and 12 DIMMsDDPDPPDPDDDDPDPPDPDD
12 DCPMMs and 12 DIMMsDPDPDP PDPDPDDPDPDP PDPDPD
Table 4. Supported DCPMM capacity in Memory Mode with two processors
Total DCPMMsTotal DIMMsProcessor Family128 GB DCPMM256 GB DCPMM512 GB DCPMM
48L123
M123
Other12 
412L 12
M 12
Other 1 
812L124
M12 
Other1  
1212L235
M23 
Other2  
Note
  1. Supported DIMM capacity is 16 GB.

  2. Supported DIMM capacity is 16 to 32 GB.

  3. Supported DIMM capacity is 16 GB to 64 GB.

  4. Supported DIMM capacity is 32 GB to 64 GB.

  5. Supported DIMM capacity is 32 GB to 128 GB.