Translation(s): English - Português (Brasil)

Network File System (NFS)

The Network File System is a distributed file system protocol originally developed by Sun Microsystems.

Differences Between NFS Versions

Version 1

Version 1 of the NFS protocol was used in-house for experimental purposes at Sun Microsystems, and was never released to the public.

Version 2

Version 2 of the NFS protocol (defined in RFC 1094, March 1989) was developed as a joint venture between Sun Microsystems and IBM. It was designed as a stateless protocol and file locking was implemented outside of the core protocol. It originally operated entirely over UDP, but several vendors later added support for TCP.

Version 3

Version 3 of the NFS protocol (defined in RFC 1813, June 1995) added:

support for 64-bit file sizes and offsets, to handle files larger than 4 gigabytes (GB);
support for asynchronous writes on the server, to improve write performance;
additional file attributes in many replies, to avoid the need to re-fetch them;
a READDIRPLUS operation, to get file handles and attributes along with filenames when scanning a directory
Other assorted improvements.