Patent ID: 6202135
Filing Date: 2001-03-13
Classification: G06F

Abstract:
A data item reconstruction element for reconstructing information stored on a back-up information storage subsystem, the back-up information storage subsystem including a plurality of storage media each associated with one of a plurality of sets, the sets being configured to store data item updates from diverse protected volumes with data item updates associated with each protected volume being stored on storage media associated with one of said sets, said data item reconstruction element comprising:a) a valid data item update identifier configured to, during a reconstruction operation in connection with one protected volume, identify valid ones of the data item updates associated with said one protected volume stored on the storage media of the set on which data item updates associated with said one protected volume are stored; andb) a valid data item retriever configured to retrieve from said storage media the ones of the data item updates identified by said valid data item update identifier as being valid, the valid data item retriever being configured to retrieve in parallel data item updates from a plurality of said storage media associated with the one of said sets on which data item updates associated with the one protected volume are stored, to obtain valid data item updates which are is associated with said one protected volume.