There's nothing special about this NVMe-TCP scenario. It can be done with any storage protocol that works over TCP. Setup a target and an initiator and use dd t

There's nothing special about this NVMe-TCP scenario. It can be done with any storage protocol that works over TCP. Setup a target and an initiator and use dd to dump the data. iSCSI or FCoE could be used also. NVMe-TCP is just newer tech!