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Chapter 3: Maintenance and Component Installation
•
Mode definitions: AD = App Direct Mode, MM = Memory Mode.
•
No mixing of PMem and NVDIMMs within the platform.
•
For MM, NM/FM ratio is between 1:4 and 1:16. (NM = Near Memory (DRAM); FM = Far
Memory (PMem)).
•
Matrix targets configs for optimized PMem to DRAM cache ratio in MM mode.
•
For each individual population, different PMem rearrangements among channels are per
-
mitted so long as the configuration doesn’t break X12 DP memory population rules.
•
Ensure the same DDR4 DIMM type and capacity are used for each DDR4 + PMem popu-
lation.
•
If the system detects an unvalidated configuration, then the system issues a BIOS warn
-
ing. The CLI functionality is limited in non-POR configurations, and select commands will
not be supported.
Validation Matrix (DDR4 DIMMs with PMem 200 Series)
DIMM Type
Ranks Per DIMM
& Data Width
(Stack)
DIMM Capacity (GB)
DRAM Density
8Gb
16Gb
RDIMM
(up to 3200)
1Rx8
N/A
N/A
1Rx4
16GB
32GB
1Rx8
16GB
32GB
1Rx4
32GB
64GB
RDIMM 3DS
(up to 3200)
4Rx4 (2H)
N/A
128GB
8Rx4 (4H)
NA
256GB
LRDIMM (up to 3200)
4Rx4
64GB
128GB
LRDIMM 3DS
(up to 3200)
4Rx4 (2H)
N/A
N/A
8Rx4 (4H)
128GB
256GB
