I'm running 3 proxmox 3.4 nodes using NFS shared storage with a dedicated 1GB network switch.
root@lnxvt10:~# pveversion
pve-manager/3.4-11/6502936f (running kernel: 2.6.32-43-pve)
root@lnxvt10:~# mount | grep 192.168.100.200
192.168.100.200:/mnt/volume0-zr2/proxmox1/ on...