The NFSv4 working group in the IETF are working on a new internet standard replication-migration protocol. No doubt, Rsync users and/or developers will likely have much experience and expertise to contribute. If you're interested in participating, in the IETF working group discussions you can read their requirements document at: http://www.ietf.org/internet-drafts/draft-thurlow-nfsv4-repl-mig-design-00.txt and a proposed protocol strawman at: http://www.ietf.org/internet-drafts/draft-ietf-nfsv4-repl-mig-proto-00.txt Mailing list archive is at: http://playground.sun.com/pub/nfsv4/nfsv4-wg-archive/2002 and the Working Group web page is at: http://www.ietf.org/html.charters/nfsv4-charter.html Thanks Brent