Wuala Distributed File System

The Economist just published an article about Wuala:

IF YOU have lots of unused storage space on your hard disk, then why not share it with others on the internet? The benefit could be distributed storage for your own files, making them available any time via the web, even if you are nowhere near your computer—indeed, even if your computer is switched off. That desideratum is what a Zurich-based firm called Caleido is aiming to provide, with a free online storage service known as Wuala that was recently introduced to the public.

Though the idea underlying it is simple, Wuala requires some nifty technology to make its distributed system work reliably. In particular, its developers, Dominik Grolimund and Luzius Meisser, have used a clever mathematical trick to compensate for the fact that the participating computers will come and go from the internet in an unpredictable way.

It caught my attention because I just finished watching a presentation on it.

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