Simple definition
NVMe over Fabrics extends NVMe access to remote storage using transports including TCP, RDMA, and Fibre Channel.
Purpose and use
NVMe-oF, NVMe over Fabrics, extends NVMe access beyond a local PCIe bus to subsystems reachable over a compatible network.
How does it work?
Transports include TCP, RDMA and Fibre Channel according to specifications and products.
Example and verification
Verify transport, controllers, discovery and namespace presentation on the relevant host.
Points to watch
The NVMe-oF label alone guarantees neither a particular latency nor redundancy or encryption.
In short
Transport choice and actual architecture determine operational capabilities.