Unlike Attic, Bup, and Borg, Obnam does not use rolling checksums. Rolling checksums are a brilliant way to do efficient deduplication. The bup DESIGN document

Unlike Attic, Bup, and Borg, Obnam does not use rolling checksums. Rolling checksums are a brilliant way to do efficient deduplication. The bup DESIGN document explains how rolling checksums can be used. https://github.com/bup/bup/blob/master/DESIGN https://github.com/bup/bup/blob/master/DESIGN http://obnam.org/bugs/more-details-dedup/ http://obnam.org/bugs/more-details-dedup/