In clustered ONTAP, what benefit does NFSv4.1 pNFS provide?

pNFS does not interact with the NVRAM interconnect used for HA pair mirroring, which is an independent synchronous replication mechanism unrelated to client data routing.

pNFS has no effect on management network traffic because data I/O never traverses the management network interface.

pNFS optimization operates at the cluster routing level between nodes, not at the level of an individual node's network module.

pNFS does not reduce traffic within a single node's data module; its benefit is specifically the elimination of cross-node forwarding over the cluster interconnect.

NFSv4.1 pNFS delivers layout information to clients so they can send I/O directly to the ONTAP node that owns the target volume, eliminating the need to proxy data through a different node over the cluster interconnect. This direct data path removes cluster interconnect overhead for data traffic, reducing congestion on that internal fabric and improving overall throughput.