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Encyclopedia of Database Systems pp 3274–3275Cite as

SAN File System

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Synonyms

Shared-disk file system

Definition

The term SAN file system refers to a file system which transfers file data directly to/from a storage device through a SAN. A SAN file system often has the capability of coherency control such that multiple servers may share the file system volume and simultaneously access files stored in the volume. The term shared disk file system is also used to refer to a SAN file system.

Key Points

In contrast to local file systems, SAN file systems allow multiple servers to share file system volumes directly and to access the same file simultaneously. To achieve this, the SAN file system has the capability of coherency control between servers. File system software running on each server may cache file data in a main memory buffer. Suppose that two servers, A and B, have cached the same file X. If A and B were to update X independently at the same time, two versions of X might be generated. The SAN file system needs to let each server be aware of the...

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Recommended Reading

  1. Barrios M, Jones T, Kinnane S, Landzettel M, Al-Safran S, Stevens J, Stone C, Thomas C, Troppens U. Sizing and tuning GPFS. IBM Redbook. SG24-5610-00, 1999.

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  2. Burns RC, Rees RM, Long DDE. Semi-preemptible locks for a distributed file system. In: Proceedings of the 19th IEEE International Performance, Computing and Communications Conference; 2000. p. 397–404.

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  3. Soltis SR, Ruwart TM, O’Keefe MT. The global file system. In: Proceedings of the 15th NASA Goddard Conference on Mass Storage Systems; 1996. p. 319–42.

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Author information

Authors and Affiliations

  1. The University of Tokyo, Tokyo, Japan

    Kazuo Goda

Authors
  1. Kazuo Goda
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Corresponding author

Correspondence to Kazuo Goda .

Editor information

Editors and Affiliations

  1. Georgia Institute of Technology College of Computing, Atlanta, GA, USA

    Ling Liu

  2. University of Waterloo School of Computer Science, Waterloo, ON, Canada

    M. Tamer Özsu

Section Editor information

  1. Inst. of Industrial Science, Univ. of Tokyo, Tokyo, Meguro Ku, Japan

    Masaru Kitsuregawa

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Goda, K. (2018). SAN File System. In: Liu, L., Özsu, M.T. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8265-9_1473

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