In the old Usenet bin scene (which is actually still going strong) .par2 files and tools like QuickPar are used to provide redundancy sets for files and they wo

In the old Usenet bin scene (which is actually still going strong) .par2 files and tools like QuickPar are used to provide redundancy sets for files and they work very well. It's a wonderful system. They work in a similar way to RAID or ZFS parity does, and you can create parity blocks for pretty much any set of files. Powerful and versatile.