Reference Guide

26 NVMe and I/O Topologies for Dell EMC PowerEdge Servers
Populated with twenty-four NVMe drives
Figure 22: PowerEdge R7425 CPU mapping with twenty-four NVMe drives
2U 2S Server; Maximize NVMe Capacity
This 2U PowerEdge R7425 configuration supports twenty-four NVMe drives. Two PCIe
switches are included, which allows the system to overprovision PCIe lanes to more
NVMe drives while persevering I/O slots, which are then connected directly to the CPU.
This configuration maximizes NVMe capacity and also reserves slot 3 for additional I/O
functionality but has a lower overall bandwidth. This configuration appeals to customers
wanting to consolidate storage media to NVMe from SAS/SATA. Customers requiring
large capacity with the low latency of NVMe will benefit from this configuration, with up
to 24 NVMe drives available for population.