At the recent FMS 2019 flash summit, Toshiba and Marvell demonstrated their own SSDs, which use a Marvell 88SN2400 NVMe-oF master to provide two 25Gb Ethernet links instead of traditional PCIe links. Wired Ethernet.
In fact, last year there was a software called KumoScale that could decompose high-performance NVMeSSD from the compute nodes so that it could be shared over the network. Toshiba came up with a complete software and hardware solution.
Toshiba also showed off an Ethernet JBOF system with 24 Ethernet SSDs. Each of them has its own independent IP address in the operating system, which can be accessed via Ethernet alone. It is quite spectacular.
At present, Toshiba's solution is very mature, ready for mass production, using Toshiba's own BiCS 96-layer stacked flash memory.