Reference Guide

25 NVMe and I/O Topologies for Dell EMC PowerEdge Servers
3.7 PowerEdge R7425
Populated with twelve NVMe drives
Figure 21: PowerEdge R7425 CPU mapping with twelve NVMe drives and twelve SAS drives
2U 2S Server; Maximize NVMe Bandwidth
This 2U PowerEdge R7425 configuration supports twelve NVMe drives and twelve
SATA/SAS drives. Eight of the NVMe drives are connected directly to the CPU and four
of the NVMe drives are connected to CPU1 through a PCIe extender card in I/O slot 3.
Customers supporting workloads that demand maximum NVMe and storage
performance will need maximum bandwidth to drive the best throughput (GB/s)
performance connect to the devices.