You don't need to stop or start any daemons, a simple 'chdev' will suffice.

If you are using a nameserver you should reflect your changes there too.

Watch out for NFS-mounts ('showmount -e'), maybe mounts from this machine to others, which *may* be adjusted.

If you are in a cluster environment (HACMP) you have to reconfigure your cluster but judging by the way you are phrasing your question I'd strongly advise to get someone knowledgeable in that area to do it for you in this case.

bakunin