How can you enable only NFS version 4 support on HP-UX 11i v3?
HP-UX v3 does not support NFSv4
Change the NFSv4 kernel parameter to yes, recompile the kernel and reboot.
Using only NFSv4 is not supported; NFSv2 and NFSv3 are always enabled
Set the configuration parameters NFS_SERVER_VERSMIN and NFS_SERVER_VERSMAX