Server storage system eliminating redundant on the client system encrypted data from one and / or multiple client system.

摘要

Data is still on the client systems (1) divided into at least one or more data blocks (7), (8), (9) and for each data block meta information (6) are created for the reconstruction of the original Data. All data blocks (7), (8), (9) is encrypted on the client system (1) with a key (10), (14) (11), (12), (13) and it is with a hash algorithm, a unique data block identification (15), (16), (17) created. Redundant data-blocks (7), (8) are transmitted and stored (41) on the same client system only once to server storage system (36). Data blocks (28) which are already redundant to the server storage system (41) are not additionally stored but only the new client system meta information (49) refer that to the existing redundant data block (41) with the necessary access rights.