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Memory Mode

In this mode, PMEMs act as volatile system memory, while DRAM DIMMs act as cache. Ensure that the ratio of total DRAM DIMM capacity to total PMEM capacity within a processor is between 1:4 and 1:16.

With one processor​

Table 1. Memory Mode with one processor (CPU 1).

  • D: DRAM DIMM

  • P: Persistent Memory Module (PMEM)

ConfigurationDIMM slots
12345678910111213141516
4 PMEMs and 4 DIMMsPDPDDPDP
4 PMEMs and 8 DIMMsD DPD DPPD DPD D
8 PMEMs and 8 DIMMsDPDPDPDPPDPDPDPD

With two processors​

Table 2. Memory Mode with two processors (CPU 1 and CPU 2)

  • D: DRAM DIMM

  • P: Persistent Memory Module (PMEM)

ConfigurationDIMM slots
12345678910111213141516
8 PMEMs and 8 DIMMsPDPDDPDP
8 PMEMs and 16 DIMMsD DPD DPPD DPD D
16 PMEMs and 16 DIMMsDPDPDPDPPDPDPDPD
ConfigurationDIMM slots
17181920212223242526272829303132
8 PMEMs and 8 DIMMsPDPDDPDP
8 PMEMs and 16 DIMMsD DPD DPPD DPD D
16 PMEMs and 16 DIMMsDPDPDPDPPDPDPDPD