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Submission + - P2P-like Tahoe Filesystem Offers Secure Cloud Stor (arstechnica.com)

suraj.sun writes: P2P-like Tahoe filesystem offers secure storage in the cloud

Tahoe is a secure cloud filesystem that is licensed under the GPL. Its distributed storage model, which resembles peer-to-peer networking, makes it possible to build a shared storage pool using excess drive capacity from multiple computers across the Internet.

Tahoe's underlying architecture is similar to that of a peer-to-peer network. Files are distributed across multiple nodes in a manner that allows data integrity to be maintained in the event that individual nodes are compromised or fail.

When a file is deployed to Tahoe, it is encrypted and split into pieces that are spread out across ten separate nodes. Using a variation of Reed-Solomon error correction, it can reconstruct a file using only three of the original ten nodes. This helps to ensure data integrity when some nodes are unavailable.

Tahoe is being used in a number of different ways, like a a "friendnet" or "hivecache" as described in project's wiki ( http://allmydata.org/trac/tahoe/wiki/UseCases ).

There is a simple interactive mockup ( http://bigasterisk.com/tahoe-playground/ ) that illustrates visually how Tahoe's distributed storage works.

ARS Technica : http://arstechnica.com/open-source/news/2009/08/p2p-like-tahoe-filesystem-offers-secure-storage-in-the-cloud.ars

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P2P-like Tahoe Filesystem Offers Secure Cloud Stor

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