NFS 4.0 vs 4.1

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NFS 4.0 vs 4.1

L1 Bithead

Looking for guidance around configuring a firewall for NFS 4.1 traffic. NFS traffic using NFS 4.0 works fine but when switching over to NFS 4.1 there is a huge amount of latency. To my understanding NFS 4.1 uses parallel nfs which is structured differently than previous nfs. Instead of the NFS Filer head (Server) being the gateway between the storage devices and the clients the new flow is between the storage devices and the clients and the Filer head facilitates meta data exchange. Anyone else have to deal with NFS 4.1 and latency where the firewall segments the traffic?

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