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Mixed Memory Mode

In this mode, some percentage of DCPMM capacity is directly accessible to specific applications (App Direct), while the rest serves as system memory. The App Direct part of DCPMM is displayed as persistent memory, while the rest of DCPMM capacity is displayed as system memory. DRAM DIMMs act as cache in this mode.

Note
Before installing DCPMM, refer to Memory configuration and Configuring DC Persistent Memory Module (DCPMM) to define the percentage of DCPMM capacity.

Mixed Memory Mode with one processor

Note
When adding one or more DCPMMs and DIMMs during a memory upgrade, you might need to move other DIMMs that are already installed to new locations.
Table 1. Mixed 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 Mixed Memory Mode with one processor
Total DCPMMsTotal DIMMsProcessor Family128 GB DCPMM256 GB DCPMM512 GB DCPMM
24L 12
M 12
Other 1 
26L 12
M 12
Other 1 
46L123
M12 
Other1  
66L123
M12 
Other1  
Note
  1. Supported DIMM capacity is 16 GB.

  2. Supported DIMM capacity is 16 to 32 GB.

  3. Supported DIMM capacity is 16 to 64 GB.

Mixed Memory Mode with two processors

Table 3. Mixed 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 Mixed Memory Mode with two processors
Total DCPMMsTotal DIMMsProcessor Family128 GB DCPMM256 GB DCPMM512 GB DCPMM
48L 12
M 12
Other 1 
412L 12
M 12
Other 1 
812L123
M12 
Other1  
1212L123
M12 
Other1  
Note
  1. Supported DIMM capacity is 16 GB.

  2. Supported DIMM capacity is 16 to 32 GB.

  3. Supported DIMM capacity is 16 to 64 GB.