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

Mixed Memory Mode with one processor​

Table 1. Memory population order in Mixed Memory Mode with one processor

D: DRAM DIMM; 16 GB or 32 GB RDIMM supported

P: DC Persistent Memory Module (DCPMM)

ConfigurationProcessor 1
87654321
2 DCPMMs and 6 RDIMMsDDDPPDDD
Table 2. Supported DCPMM capacity in Mixed Memory Mode with one processor
Total DCPMMsTotal DIMMsProcessor Family128 GB DCPMM256 GB DCPMM1512 GB DCPMM2
26L √√
M √√
Other √ 
Note

  1. For 256 GB DCPMM, use 16 GB RDIMM.

  2. For 512 GB DCPMM, use 16 GB or 32 GB RDIMM.

Mixed Memory Mode with two processors​

Table 3. Memory population order in Mixed Memory Mode with two processors

D: DRAM DIMM; 16 GB or 32 GB RDIMM supported

P: DC Persistent Memory Module (DCPMM)

ConfigurationProcessor 2Processor 1
16151413121110987654321
4 DCPMMs and 12 RDIMMsDDDPPDDDDDDPPDDD
Table 4. Supported DCPMM capacity in Mixed Memory Mode with two processors
Total DCPMMsTotal DIMMsProcessor Family128 GB DCPMM256 GB DCPMM1512 GB DCPMM2
412L √√
M √√
Other √ 
Note

  1. For 256 GB DCPMM, use 16 GB RDIMM.

  2. For 512 GB DCPMM, use 16 GB or 32 GB RDIMM. To install four 512 GB DCPMMs, ensure that the processor TDP is lower than or equal to 125 watts.