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Existing HSMs are largely "file-oriented" and are firmly rooted in the "directory of files" convention though many provide a virtual view of physical storage. Underneath the hood, the Fedora Repository uses the "directory of files" convention for physical storage of managed content and metadata through the Akubra plug-in module. In fact, a Fedora Repository can be entirely rebuilt from it its managed files. It appears feasible for the Fedora Repository to delegate physical storage to an HSM. However, it is likely that the Fedora Repository will require modification in order to provide a robust integration with HSMs since applications really should have no not depend on knowledge of how the disseminations are accomplished.
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