NFS technology is fundamentally dependent on the local network to operate. Any highly available NFS implementation must also account for the possibility of single failures in the network. This is outlined in the Network High Availability section.
It should be noted that the VMkernel on the storage network should be set up on a switch or distributed switch with multiple NICs available. This will ensure the VMkernel on the storage network always has access to the NFS server in the event of a link failure.
It is best practice to have a VMkernel on the same subnet as the NFS server as there is no port binding available to NFS. NFS traffic is sent out according to these rules.
It will use the first VMkernel adapter that is on the same subnet as the NFS server. If multiple adapters are on the subnet, it will use the first one found.
If no VMkernel adapters exist on the same subnet, NFS will be sent out the first VMkernel adapter enabled for management traffic and will traverse...