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Dell EMC PMem 100 Series User's Guide

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PMem Recommended Topologies

This section contains the high-level introduction on PMem configuration and provisioning concepts.

The following topologies are recommended per CPU socket. For multiple socket systems with more than one PMem, each socket should be populated identically.

See the Installation and Service Manual for Memory installation guidelines of respective servers.

NOTE The following image and table is for reference which displays the R740/R740XD CPU and DIMM slot locations.
Figure 1. Memory Layout for R740/R740XD
This image shows R740/R740XD Memory Layout
Table 1. PMem configurationsThe following table provides the PMem configurations that have been validated and are fully supported for 2-Socket server configurations:
Number of CPUs in the Server PMem Population DRAM Population DRAM Capacity (GB) PMem Capacity (GB) OS Memory in Memory Mode (GB) Total Memory (GB) Total Memory per CPU (GB) Ratio DRAM to Optane Memory Requires an M or L CPU Supported in App Direct Mode Supported in Memory Mode
1 128 GB x 2 16 GB x 4 64 256 256 320 320 1:4 No Yes Yes
1 128 GB x 1 16 GB x 6 96 128 NA 224 224 1:1.3 No Yes No
1 128 GB x 2 16 GB x 6 96 256 NA 352 352 1:2.7 No Yes No
1 128 GB x 4 16 GB x 6 96 512 512 608 608 1:5.3 No Yes Yes
1 128 GB x 6 16 GB x 6 96 768 768 864 864 1:8 No Yes Yes
1 128 GB x 1 32 GB x 6 192 128 NA 320 320 1:0.7 No Yes No
1 128 GB x 2 32 GB x 6 192 256 NA 448 448 1:1.3 No Yes No
1 128 GB x 4 32 GB x 6 192 512 NA 704 704 1:2.7 No Yes No
1 128 GB x 6 32 GB x 6 192 768 768 960 960 1:4 No Yes Yes
1 128 GB x 1 64 GB x 6 384 128 NA 512 512 1:0.3 No Yes No
2 128 GB x 1 16 GB x 12 192 128 NA 320 160 1:0.7 No Yes No
2 128 GB x 2 16 GB x 12 192 256 NA 448 224 1:1.3 No Yes No
2 128 GB x 4 16 GB x 8 128 512 512 640 320 1:4 No Yes Yes
2 128 GB x 4 16 GB x 12 192 512 NA 704 352 1:2.7 No Yes No
2 128 GB x 8 16 GB x 12 192 1,024 1,024 1,216 608 1:5.3 No Yes Yes
2 128 GB x 12 16 GB x 12 192 1,536 1,536 1,728 864 1:8 No Yes Yes
2 128 GB x 1 32 GB x 12 384 128 NA 512 256 1:0.3 No Yes No
2 128 GB x 2 32 GB x 12 384 256 NA 640 320 1:0.7 No Yes No
2 128 GB x 4 32 GB x 12 384 512 NA 896 448 1:1.3 No Yes No
2 128 GB x 8 32 GB x 12 384 1,024 NA 1,408 704 1:2.7 No Yes No
2 128 GB x 12 32 GB x 12 384 1,536 1,536 1,920 960 1:4 No Yes Yes
2 128 GB x 4 64 GB x 12 768 512 NA 1,280 640 1:0.7 No Yes No
2 128 GB x 8 64 GB x 12 768 1,024 NA 1,792 896 1:1.3 No Yes No
2 128 GB x 12 64 GB x 12 768 1,536 NA 2,304 1,152 1:2 L SKU Yes No
2 128 GB x 12 128 GB x 12 1,536 1,536 NA 3,072 1,536 1:1 L SKU Yes No
2 512 GB x 8 32 GB x 12 384 4,096 4,096 4,480 2,240 1:1.7 L SKU Yes Yes
2 512 GB x 12 32 GB x 12 384 6,144 6,144 6,528 3,264 1:16 L SKU Yes Yes
2 512 GB x 8 64 GB x 12 768 4,096 4,096 4,864 2,432 1:5.3 L SKU Yes Yes
2 512 GB x 12 64 GB x 12 768 6,144 6,144 6,912 3,456 1:8 L SKU Yes Yes
2 512 GB x 12 128 GB x 12 1,536 6,144 6,144 7,680 3,840 1:4 L SKU Yes Yes
2 256 GB x 8 16 GB x 12 192 2,048 2,048 2,240 1,120 1:10.7 L SKU Yes Yes
2 256 GB x 8 32 GB x 12 384 2,048 2,048 2,432 1,216 1:5.3 L SKU Yes Yes
2 256 GB x 12 32 GB x 12 384 3,072 3,072 3,456 1,728 1:8 L SKU Yes Yes
2 256 GB x 8 64 GB x 12 768 2,048 NA 2,816 1,408 1:2.7 L SKU Yes No
2 256 GB x 12 64 GB x 12 768 3,072 3,072 3,840 1,920 1:4 L SKU Yes Yes
2 256 GB x 12 128 GB x 12 1,536 3,072 NA 4,608 2,304 1:2 L SKU Yes No
4 128 GB x 16 16 GB x 24 384 2,048 2,048 2,432 608 1:5.3 No Yes Yes
4 128 GB x 24 16 GB x 24 384 3,072 3,072 3,456 864 1:8 No Yes Yes
4 128 GB x 16 32 GB x 24 768 2,048 NA 2,816 704 1:2.7 No Yes No
4 128 GB x 24 32 GB x 24 768 3,072 3,072 3,840 960 1:4 No Yes Yes
4 128 GB x 24 64 GB x 24 1,536 3,072 NA 4,608 1,152 1:2 L SKU Yes No
4 128 GB x 24 128 GB x 24 3,072 3,072 NA 6,144 1,536 1:1 L SKU Yes No
4 512 GB x 16 32 GB x 24 768 8,192 8,192 8,960 2,240 1:10.7 L SKU Yes Yes
4 512 GB x 24 32 GB x 24 768 12,288 12,288 13,056 3,264 1:16 L SKU Yes Yes
4 512 GB x 16 64 GB x 24 1,536 8,192 8,192 9,728 2,432 1:5.3 L SKU Yes Yes
4 512 GB x 24 64 GB x 24 1,536 12,288 12,288 13,824 3,456 1:8 L SKU Yes Yes
4 512 GB x 24 128 GB x 24 3,072 12,288 12,288 15,360 3,840 1:4 L SKU Yes Yes
4 256 GB x 16 16 GB x 24 384 4,096 4,096 4,480 1,120 1:10.7 L SKU Yes Yes
4 256 GB x 24 16 GB x 24 384 6,144 6,144 6,528 1,632 1:16 L SKU Yes Yes
4 256 GB x 16 32 GB x 24 768 4,096 4,096 4,864 1,216 1:5.3 L SKU Yes Yes
4 256 GB x 24 32 GB x 24 768 6,144 6,144 6,912 1,728 1:8 L SKU Yes Yes
4 256 GB x 16 64 GB x 24 1,536 4,096 NA 5,632 1,408 1:2.7 L SKU Yes No
4 256 GB x 24 64 GB x 24 1,536 6,144 6,144 7,680 1,920 1:4 L SKU Yes Yes
4 256 GB x 24 128 GB x 24 3,072 6,144 NA 9,216 2,304 1:2 L SKU Yes No
Table 2. Single socket PMem populationThe following table shows the single socket PMem population.
CPU 0
Channel 2 Channel 1 Channel 0 Channel 0 Channel 1 Channel 2
PMem DRAM A3 A9 A2 A8 A1 A7 A10 A4 A11 A5 A12 A6
128 GB x 2 16 GB x 4 PMem DRAM DRAM DRAM DRAM PMem
128 GB x 1 16 GB x 6 DRAM DRAM DRAM PMem DRAM DRAM DRAM
128 GB x 2 16 GB x 6 DRAM DRAM DRAM PMem PMem DRAM DRAM DRAM
128 GB x 4 16 GB x 6 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
128 GB x 6 16 GB x 6 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
128 GB x 1 32 GB x 6 DRAM DRAM DRAM PMem DRAM DRAM DRAM
128 GB x 2 32 GB x 6 DRAM DRAM DRAM PMem PMem DRAM DRAM DRAM
128 GB x 4 32 GB x 6 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
128 GB x 6 32 GB x 6 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
128 GB x 1 64 GB x 6 DRAM DRAM DRAM PMem DRAM DRAM DRAM
Table 3. Dual socket PMem populationThe following table shows the dual socket PMem population.
CPU 0 and CPU 1
Channel 2 Channel 1 Channel 0 Channel 0 Channel 1 Channel 2
PMem DRAM A3, B3 A9, B9 A2, B2 A8, B8 A1, B1 A7, B7 A10, B10 A4, B4 A11, B11 A5, B5 A12, B12 A6, B6
128 GB x 1 16 GB x 12 DRAM DRAM DRAM PMem only on CPU 0 DRAM DRAM DRAM
128 GB x 2 16 GB x 12 DRAM DRAM DRAM PMem DRAM DRAM DRAM
128 GB x 4 16 GB x 8 PMem DRAM DRAM DRAM DRAM PMem
128 GB x 4 16 GB x 12 DRAM DRAM DRAM PMem PMem DRAM DRAM DRAM
128 GB x 8 16 GB x 12 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
128 GB x 12 16 GB x 12 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
128 GB x 1 32 GB x 12 DRAM DRAM DRAM PMem only on CPU 0 DRAM DRAM DRAM
128 GB x 2 32 GB x 12 DRAM DRAM DRAM PMem DRAM DRAM DRAM
128 GB x 4 32 GB x 12 DRAM DRAM DRAM PMem PMem DRAM DRAM DRAM
128 GB x 8 32 GB x 12 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
128 GB x 12 32 GB x 12 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
128 GB x 4 64 GB x 12 DRAM DRAM DRAM PMem PMem DRAM DRAM DRAM
128 GB x 8 64 GB x 12 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
128 GB x 12 64 GB x 12 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
128 GB x 12 128 GB x 12 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
512 GB x 8 32 GB x 12 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
512 GB x 12 32 GB x 12 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
512 GB x 8 64 GB x 12 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
512 GB x 12 64 GB x 12 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
512 GB x 12 128 GB x 12 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
256 GB x 8 16 GB x 12 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
256 GB x 8 32 GB x 12 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
256 GB x 12 32 GB x 12 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
256 GB x 8 64 GB x 12 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
256 GB x 12 64 GB x 12 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
256 GB x 12 128 GB x 12 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
Table 4. Quad socket PMem populationThe following table shows the quad socket PMem population.
CPU 0, CPU 1, CPU 2 and CPU 3
Channel 2 Channel 1 Channel 0 Channel 0 Channel 1 Channel 2
PMem DRAM A3, B3, C3 A9, B9, C9 A2, B2, C2 A8, B8, C8 A1, B1, C1 A7, B7, C7 A10, B10, C10 A4, B4, C4 A11, B11, C11 A5, B5, C5 A12, B12, C12 A6, B6, C6
128 GB x 16 16 GB x 24 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
128 GB x 24 16 GB x 24 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
128 GB x 16 32 GB x 24 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
128 GB x 24 32 GB x 24 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
128 GB x 24 64 GB x 24 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
128 GB x 24 128 GB x 24 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
512 GB x 16 32 GB x 24 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
512 GB x 24 32 GB x 24 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
512 GB x 16 64 GB x 24 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
512 GB x 24 64 GB x 24 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
512 GB x 24 128 GB x 24 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
256 GB x 16 16 GB x 24 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
256 GB x 24 16 GB x 24 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
256 GB x 16 32 GB x 24 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
256 GB x 24 32 GB x 24 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
256 GB x 16 64 GB x 24 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
256 GB x 24 64 GB x 24 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
256 GB x 24 128 GB x 24 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
512 GB x 12 64 GB x 12 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
512 GB x 12 128 GB x 12 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
256 GB x 8 16 GB x 12 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
256 GB x 8 32 GB x 12 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
256 GB x 12 32 GB x 12 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
256 GB x 8 64 GB x 12 DRAM DRAM PMem DRAM PMem PMem DRAM PMem DRAM DRAM
256 GB x 12 64 GB x 12 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM
256 GB x 12 128 GB x 12 DRAM PMem DRAM PMem DRAM PMem PMem DRAM PMem DRAM PMem DRAM

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