Weekend Project: Get Started with Tahoe-LAFS Storage Grids (Linux.com)
Beyond that, though, Tahoe offers peer-to-peer distributed data storage with adjustable levels of redundancy. You can tune your "grid" for performance, fault-tolerance, or strike a balance in between, and you can use heterogeneous hardware and service providers to make up your nodes, providing you with a second layer of protection. Furthermore, although you can use Tahoe-LAFS as a simple distributed filesystem, you can also run web and (S)FTP services directly from your Tahoe grid."
