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Also known as: PAR2 recovery block, repair block
A block of Reed-Solomon parity data stored in the .volNNN+NN.par2 files, where the filename states which block it starts at and how many it contains. Each recovery block can stand in for any one missing or damaged source block, so the count available sets the exact repair ceiling. Clients download extra PAR2 volumes only when verification shows blocks are actually needed.
Browse all terms in Binaries, Encoding & Repair, or see the full Usenet glossary.