A method for storing data that is reconstructable in a piecewise manner comprises receiving a user data unit in the form of a data stream to be stored in the data storage system. A plurality of logical data units associated with the user data unit are then identified. A digital signature is associated...http://www.google.fr/patents/US7685377?utm_source=gb-gplus-shareBrevet US7685377 - Piecewise logical data management
