Patent ID: 8397080
Filing Date: 2013-03-12
Classification: G06F

Abstract:
1. A scalable segment-based data de-duplication system for incremental backups, comprising: a master device on a secondary-storage node side that receives at least a plurality of incremental changes, a plurality of fingerprints of a plurality of segments to be de-duplicated, mapping entities from logical block address to physical location; wherein said master device further includes at least a distributer to distribute at least a de-duplication functionality to at least a slave device on a data node side, and performs data de-duplication on said plurality of segments via a way to cluster a plurality of fingerprints in a range and content-based locality-preserved fingerprint container for said plurality of incremental changes, varied sampling rates for said plurality of segments, and a per-segment summary structure to avoid unnecessary inputs or outputs involved in de-duplication.