Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

Distributed File Systems

  • Umar Farooq Minhas
  • Avrilia Floratou
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_80646

Synonyms

Network file systems; Parallel file systems

Definition

Distributed file systems (DFS) use a network protocol to allow multiple clients to transparently share access to files which are stored in a distributed fashion on one or more machines and multiple storage devices typically connected in a Local Area Network (LAN). Ideally, a DFS should be a natural extension of the local file system, hiding any implementation details of its distributed nature from the clients of the file system. Similar to a local file system, a DFS allows clients to access files at byte boundaries. It also provides the following features: primitive file system APIs including but not limited to open(), close(), read(), and write() mechanisms to restrict access to files and directories by implementing security and permissions and a global namespace for local and remote files. Files in a DFS are sometimes replicatedfor added redundancy, availability, and fault tolerance in the presence of hardware,...

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Recommended Reading

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Microsoft ResearchRedmondUSA
  2. 2.MicrosoftSunnyvaleUSA