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Figure 36. PowerEdge R760 CPU mapping with 24x NVMe HW RAID drives
2U Server; Maximize NVMe Capacity with Full Bandwidth
With the 24x NVMe switched backplane, the left 12 drives go to CPU 2, then the right 12 drives go to CPU 1. Through the switch which has 2 controllers that require 2 x8 cables to each PERC12 then another 2 x8 cables from the PERC12 to the CPU, there is technically a 3:1 oversubscription of the NVMe PCIe lanes from the processors. This is because we bring x32 lanes to the PCIe switch which fans out to feed 24x x4 devices (96 lanes). Customers requiring large capacity with the low latency of NVMe will benefit from this configuration.