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NFS Illustrated by Brent Callaghan

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Chapter 6. NFS Version 2

Despite its designation as “version 2” of the protocol, NFS version 2 was the first published version of the NFS protocol. Version 1 of the protocol existed briefly at Sun as a prototype that was deployed on a few clients and servers within the development group. When substantial changes were made to the version 1 protocol, the development group decided to apply the changes as a new version number to verify the ability of the server to support multiple versions concurrently and to verify the RPC version fallback of the prototype clients. NFS version 1 was never published.

Implementation of NFS version 2 began at Sun in March 1984. It was based on the SunOS UNIX kernel, which was based on BSD 4.2. In 1985, NFS version ...

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