A temporal data store includes one or more data groups in an online archive or snapshot systems. Each data group in turn includes a plurality of members, data of each of which is preserved in a finite data storage having a fixed, predetermined storage capacity. Each data group further has associated...http://www.google.fr/patents/US20030220929?utm_source=gb-gplus-shareBrevet US20030220929 - MANAGING FINITE DATA STORAGE UTILIZING PRESERVATION WEIGHTS
MANAGING FINITE DATA STORAGE UTILIZING PRESERVATION WEIGHTS