# Network File System > specific implementation of a network file system, originally developed by Sun in 1984, later standardised by IETF **Wikidata**: [Q623494](https://www.wikidata.org/wiki/Q623494) **Wikipedia**: [English](https://en.wikipedia.org/wiki/Network_File_System) **Source**: https://4ort.xyz/entity/network-file-system ## Summary Network File System (NFS) is a specific implementation of a network file system protocol that allows users to access files over a network as if they were stored locally. Originally developed by Sun Microsystems in 1984 and later standardized by the IETF, NFS has become a fundamental technology for distributed file access across computer systems. ## Key Facts - NFS was originally developed by Sun Microsystems in 1984 - The protocol operates on port 2049 - NFS has been standardized by the IETF (Internet Engineering Task Force) - It's classified as part of the application layer in the OSI model - NFS is an instance of the broader "network file system" class of protocols - The protocol has aliases including NFS, 網路檔案系統, and PNFS - NFS has 35 Wikipedia sitelinks across multiple languages including Arabic, Azari, Bengali, Catalan, Czech, German, English, Spanish, Estonian, and Basque - The protocol is described by several RFC documents including RFC 1813 (NFS Version 3), RFC 1094 (original NFS), RFC 2623 (security issues), RFC 2624 (version 4 design), and RFC 3010 (NFS version 4) - It's related to the defunct IBM DCE Distributed File System project - The URI scheme for Network File System is "nfs" ## FAQs ### Q: What is the primary purpose of Network File System? A: Network File System (NFS) is a protocol that allows users to access files on remote computers as if they were stored locally. This enables seamless file sharing across a network, making distributed file systems appear transparent to users. ### Q: Who developed Network File System and when? A: Network File System was originally developed by Sun Microsystems in 1984. Later, it was standardized by the IETF (Internet Engineering Task Force) to ensure interoperability between different implementations. ### Q: What layer of the OSI model does Network File System operate on? A: Network File System operates on the application layer of the OSI model, which is layer 7. This means it provides file access services directly to end-user applications. ### Q: What are the key technical specifications of NFS? A: NFS uses port 2049 for communication and is defined by multiple RFC documents including RFC 1813 for version 3, RFC 1094 for the original version, and RFC 3010 for version 4. The protocol has aliases including NFS, 網路檔案系統 (Chinese), and PNFS (parallel NFS). ### Q: How does NFS relate to other distributed file systems? A: NFS is related to the broader class of network file systems, which encompasses any protocol for accessing remote files as if they were local. It's specifically connected to the defunct IBM DCE Distributed File System project but remains widely implemented and standardized independently. ## Why It Matters Network File System revolutionized how distributed computer systems share data, enabling transparent access to files across networks regardless of their physical location. By abstracting the complexities of remote file access, NFS made distributed computing more accessible and user-friendly, laying the foundation for modern cloud storage and distributed file systems. Its standardization by the IETF ensured interoperability between different systems and vendors, allowing for widespread adoption in both enterprise and academic environments. NFS continues to be relevant today as organizations increasingly rely on distributed data access, remote collaboration, and centralized storage solutions that NFS helped pioneer. ## Notable For - Being one of the earliest and most widely adopted network file system protocols, developed by Sun Microsystems in 1984 - Standardization by the IETF ensuring cross-platform compatibility and widespread industry adoption - Operating at the application layer (OSI layer 7) to provide high-level file access services - Having extensive Wikipedia presence with 35 sitelinks across multiple languages, demonstrating its global relevance and documentation - Supporting multiple technical specifications through RFC documents, with specialized versions addressing security (RFC 2623), design considerations (RFC 2624), and protocol versions (RFC 1813, RFC 3010) ## Body ### Technical Overview Network File System (NFS) is a specific implementation of a network file system that enables users to access files on remote computers as if they were stored locally. The protocol operates at the application layer of the OSI model, providing file access services directly to end-user applications. NFS uses port 2049 for communication and has several aliases including NFS, 網路檔案系統 (Chinese), and PNFS (parallel NFS). ### Development and Standardization Originally developed by Sun Microsystems in 1984, NFS became a fundamental technology for distributed file access. The protocol was later standardized by the IETF (Internet Engineering Task Force) to ensure interoperability between different implementations and vendors. This standardization process involved several RFC documents that defined various aspects of the protocol. ### Protocol Specifications NFS is described by multiple RFC documents that specify different versions and aspects of the protocol: - RFC 1813: NFS Version 3 Protocol Specification - RFC 1094: NFS: Network File System Protocol specification (original version) - RFC 2623: NFS Version 2 and Version 3 Security Issues and the NFS Protocol's Use of RPCSEC_GSS and Kerberos V5 - RFC 2624: NFS Version 4 Design Considerations - RFC 3010: NFS version 4 Protocol ### International Presence The global relevance of Network File System is evidenced by its extensive Wikipedia presence with 35 sitelinks across multiple languages including Arabic, Azari, Bengali, Catalan, Czech, German, English, Spanish, Estonian, and Basque. This multilingual documentation underscores the protocol's adoption and importance across different regions and computing communities. ### Related Technologies NFS is related to the broader class of network file systems, which encompasses any protocol for accessing remote files as if they were local. It has specific connections to the defunct IBM DCE Distributed File System project, demonstrating its place within the ecosystem of distributed file system technologies. The "network file system" class that NFS belongs to includes any computer network protocol that provides transparent file access to remote machines. ## References 1. [Source](https://github.com/JohnMarkOckerbloom/ftl/blob/master/data/wikimap) 2. Freebase Data Dumps. 2013 3. RFC 2224: NFS URL Scheme 4. National Library of Israel 5. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)