This article is from the storage FAQ part2, by Rodney D. Van Meter with numerous contributions by others.
NFS V3 supports 64-bit files and write caching. The first implementation was from Digital with DEC OSF/1 V3.0 for Alpha AXP. Silicon Graphics supports it on IRIX 5.3. Cray will support it on UNICOS 9. I don't know about other vendors but I have heard rumours that the releases coming in the second half of 1995 will support it. Further information on NFS V3 can be found from gatekeeper.dec.com:pub/standards/nfs/NFS3.spec.ps.Z (ftp://gatekeeper.dec.com/pub/standards/nfs/NFS3.spec.ps.Z) (email@example.com, 95/1/22) Solaris 2.5, available Nov. 95, is reported to have V3 support. Network Appliances have it as of 3.0, Sept. 95. (firstname.lastname@example.org (Guy Harris), 95/10/6)