One embodiment of the invention is directed to providing a single instance storage capability in a content addressable computer system that stores content units in a time-based directory structure. Another embodiment is directed to managing access to content units that do not include a timestamp in their...http://www.google.de/patents/US7392235?utm_source=gb-gplus-sharePatent US7392235 - Methods and apparatus for retrieval of content units in a time-based directory structure
