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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.
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 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	√³
		M	√¹	√²	√³
		Other	√¹	√²
2	6	L		√¹	√²
		M		√¹	√²
		Other		√¹
4	6	L	√¹	√²	√⁴
		M	√¹	√²
		Other	√¹
6	6	L	√²	√³	√⁵
		M	√²	√³
		Other	√²

Note

Supported DIMM capacity is 16 GB.
Supported DIMM capacity is 16 to 32 GB.
Supported DIMM capacity is 16 GB to 64 GB.
Supported DIMM capacity is 32 GB to 64 GB.
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.
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 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	√³
		M	√¹	√²	√³
		Other	√¹	√²
4	12	L		√¹	√²
		M		√¹	√²
		Other		√¹
8	12	L	√¹	√²	√⁴
		M	√¹	√²
		Other	√¹
12	12	L	√²	√³	√⁵
		M	√²	√³
		Other	√²

Note

Supported DIMM capacity is 16 GB.
Supported DIMM capacity is 16 to 32 GB.
Supported DIMM capacity is 16 GB to 64 GB.
Supported DIMM capacity is 32 GB to 64 GB.
Supported DIMM capacity is 32 GB to 128 GB.

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Memory Mode with one processor
Memory Mode with two processors