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 Configure 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.
Configuration	Processor 1
Configuration	12	11	10	9	8	7	6	5	4	3	2	1
2 DCPMMs and 4 DIMMs	P		D		D			D		D		P
2 DCPMMs and 6 DIMMs	D		D		D	P	P	D		D		D
4 DCPMMs and 6 DIMMs	D		D	P	D	P	P	D	P	D		D
6 DCPMMs and 6 DIMMs	D	P	D	P	D	P	P	D	P	D	P	D

Table 2. Supported DCPMM capacity in Mixed Memory Mode with one processor
Total DCPMMs	Total DIMMs	Processor Family	128 GB DCPMM	256 GB DCPMM	512 GB DCPMM
2	4	L		√¹	√²
		M		√¹	√²
		Other		√¹
2	6	L		√¹	√²
		M		√¹	√²
		Other		√¹
4	6	L	√¹	√²	√³
		M	√¹	√²
		Other	√¹
6	6	L	√¹	√²	√³
		M	√¹	√²
		Other	√¹

Note

Supported DIMM capacity is 16 GB.
Supported DIMM capacity is 16 to 32 GB.
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.
Configuration	Processor 2												Processor 1
Configuration	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1
4 DCPMMs and 8 DIMMs	P		D		D			D		D		P	P		D		D			D		D		P
4 DCPMMs and 12 DIMMs	D		D		D	P	P	D		D		D	D		D		D	P	P	D		D		D
8 DCPMMs and 12 DIMMs	D		D	P	D	P	P	D	P	D		D	D		D	P	D	P	P	D	P	D		D
12 DCPMMs and 12 DIMMs	D	P	D	P	D	P	P	D	P	D	P	D	D	P	D	P	D	P	P	D	P	D	P	D

Table 4. Supported DCPMM capacity in Mixed Memory Mode with two processors
Total DCPMMs	Total DIMMs	Processor Family	128 GB DCPMM	256 GB DCPMM	512 GB DCPMM
4	8	L		√¹	√²
		M		√¹	√²
		Other		√¹
4	12	L		√¹	√²
		M		√¹	√²
		Other		√¹
8	12	L	√¹	√²	√³
		M	√¹	√²
		Other	√¹
12	12	L	√¹	√²	√³
		M	√¹	√²
		Other	√¹

Note

Supported DIMM capacity is 16 GB.
Supported DIMM capacity is 16 to 32 GB.
Supported DIMM capacity is 16 to 64 GB.

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Mixed Memory Mode

Mixed Memory Mode with one processor​

Mixed Memory Mode with two processors​

Mixed Memory Mode with one processor

Mixed Memory Mode with two processors