Editing Network File System (section)

===NFSv2===

Version&nbsp;2 of the protocol (defined in {{IETF RFC|1094|link=no}}, March 1989) originally operated only over [[User Datagram Protocol]] (UDP). Its designers meant to keep the server side [[Stateless server|stateless]], with [[lock (computer science)|locking]] (for example) implemented outside of the core protocol. People involved in the creation of NFS version&nbsp;2 include [[Russel Sandberg]], [[Bob Lyon (engineer)|Bob Lyon]], [[Bill Joy]], [[Steve Kleiman]], and others.<ref name="sun85" /><ref name="Rusty">{{Cite journal |title= The Sun Network Filesystem: Design, Implementation and Experience |journal= Technical Report |author= Russel Sandberg |publisher= Sun Microsystems |url= http://www.cse.buffalo.edu/faculty/tkosar/cse710_spring13/papers/nfs.pdf }}</ref>

The [[Virtual File System]] interface allows a modular implementation, reflected in a simple protocol. By February 1986, implementations were demonstrated for operating systems such as [[System V]] release&nbsp;2, [[DOS]], and VAX/VMS using [[Eunice (software)|Eunice]].<ref name="Rusty" />
NFSv2 only allows the first 2&nbsp;GB of a file to be read due to [[32-bit]] limitations.