Tahoe-LAFS

Tahoe-LAFS

Initial release	May 2, 2007[1]
Stable release	1.11.0[2] / 30 March 2016
Repository	tahoe-lafs.org/trac/tahoe-lafs/browser
Development status	Active
Written in	Python
Operating system	Cross-platform
Available in	English
Type	Cloud computing
License	GNU GPL 2+ and other[3]
Website	tahoe-lafs.org

Tahoe-LAFS (Tahoe Least-Authority File Store ^[4]) is a free and open, secure, decentralized, fault-tolerant, distributed data store and distributed file system.^[5][6] It can be used as an online backup system, or to serve as a file or web host similar to Freenet,^[7] depending on the front-end used to insert and access files in the Tahoe system. Tahoe can also be used in a RAID-like fashion using multiple disks to make a single large RAIN^[8] pool of reliable data storage.

The system is designed and implemented around the "principle of least authority" (POLA). Strict adherence to this convention is enabled by the use of cryptographic capabilities which provide the minimum set of privileges necessary to perform a given task by asking agents. A RAIN array acts as a storage volume - these servers do not need to be trusted by confidentiality or integrity of the stored data.

Zooko Wilcox-O'Hearn is one of the developers.^[9][10]

Fork

A patched version of Tahoe-LAFS exists from 2011, and was made to run on anonymous networks I2P, with support for multiple introducers. There is also a version for Microsoft Windows.^[11] It must be downloaded from within the I2P network.^[12] When I2P, and Tahoe-LAFS are used together, the location of the nodes is unknown. This allows for anonymous distributed grids to be formed. In normal operation, the IP address of all nodes are known to the introducers and any client systems on the grid.

See also

• Ceph (file system)
• Coda (file system)
• Comparison of distributed file systems
• Freenet
• GlusterFS
• MooseFS
• LizardFS
• iFolder
• List of distributed file systems
• Lustre (file system)
• Parallel Virtual File System
• XtreemFS

References

1. "Tahoe-LAFS Documentation". tahoe-lafs.org. Retrieved 2013-05-01.
2. Warner, Brian (2016-03-30). "ANN: Tahoe-LAFS 1.11.0 released". tahoe-dev (Mailing list). Retrieved 2016-05-22.
3. https://tahoe-lafs.org/trac/tahoe-lafs/browser/git/docs/about.rst
4. "Tahoe-LAFS wiki". tahoe-lafs.org. Retrieved 2014-12-01.
5. Ars Technica
6. Monteiro, Julian Geraldes (16 November 2010). "Modeling and Analysis of Reliable Peer-to-Peer Storage Systems" (PDF). Sophia Antipolis: Université de Nice. p. 17. Retrieved 15 December 2012.
7. Zooko's blog, hosted on Tahoe
8. Redundant array of independent nodes
9. Wilcox-O'Hearn, Zooko, ANNOUNCING allmydata.org "Tahoe", the Least-Authority Filesystem, v1.3, retrieved 20 April 2009
10. "Why Whack-a-Tard won't save music". The Register. April 22, 2009.
11. Foolscap & Tahoe-LAFS patched for use on I2P (with support for multiple introducers). 2013.
12. http://killyourtv.i2p.rocks/tahoe-lafs/ URL to inside I2P

• Haver, Eirik; Melvold, Eivind; Ruud, Pål (23 September 2011). "Cloud Storage Vault". Institutt for telematikk. pp. 2–3, 20–21 80–80. Retrieved 15 December 2012.
• Arjan Peddemors, Christiaan Kuun, Rogier Spoor, Paul Dekkers and Christiaan den Besten (29 June 2011). "Survey of Technologies for Wide Area Distributed Storage" (PDF). p. 17. Retrieved 15 December 2012.
• Huchton, Scott (March 2011). "Secure mobile distributed file system (MDFS)" (PDF). Monterey, California. Naval Postgraduate School. pp. 8–9. Retrieved 15 December 2012.
• Lee, Changhoon. Secure and trust computing, data management and applications : STA 2011 workshops: IWCS 2011 and STAVE 2011, Loutraki, Greece, June 28 - 30, 2011. Berlin: Springer. pp. 192–193. ISBN 3642223648.
• Renata Spolon Lobato; Renato Dulizio Martins (2011). "Avaliacao De Desempenho De Sistemas De Arquivos Distribuidos" (PDF) (in Portuguese). São José do Rio Preto. pp. 10–12. Retrieved 15 December 2012.

External links

• Official website
• Tahoe – The Least-Authority Filesystem
• Transitive Grace Period Public Licence ("TGPPL") v. 1.0