Pairtrees for Object Storage (V0.1)
Pairtree is a filesystem hierarchy for holding objects that are located by mapping identifier strings to object directory (or folder) paths two characters at a time. Pairtrees have the advantage that many object operations, including backup and restore, can be performed with native operating system tools.
Latest version: Pairtree-latest (2008-06-17)
Known implementations (please add!)
Ben O'Steen, Oxford: