https://www.theregister.co.uk/2018/06/15/endtoend_nvme_arrays_poised_to_ressurrect_external_storage/

Analysis NVMe-over Fabrics arrays are performing as fast as servers fitted with the same storage media – Optane or Z-SSD drives for example. Because NVMe-oF uses RDMA (Remote Direct Memory Access) then the network latency involved in accessing external storage arrays effectively goes away.

This can be seen with performance results in financial benchmarks, genomics processing, and AI/ML applications.