One ESXi host cannot ping its NFS targets.
So obviously the NFS datastores show inaccessible. For reference, every other ESXi host work fine and can ping its NFS targets.
Every host has the NFS portgroup with the vlan and vmk/uplink settings are exactly the same with the exception of one of the physical NICs has no CDP information and the "Networks" section under CDP shows empty if I remember correctly. No indication that the uplink is down so could this still be a UCSM/Fabric upstream switch issue?