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SCALABLE SEGMENT-BASED DATA DE-DUPLICATION SYSTEM AND METHOD FOR INCREMENTAL BACKUPS
SCALABLE SEGMENT-BASED DATA DE-DUPLICATION SYSTEM AND METHOD FOR INCREMENTAL BACKUPS
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机译:基于可伸缩网段的数据重复数据删除系统和增量备份方法
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摘要
A system in accordance with exemplary embodiments may provide a scalable segment-based data de-duplication for incremental backups. In the system, a master device on a secondary-storage node side may receive at least incremental changes, fingerprints, mapping entities, and distribute de-duplication functionality to at least a slave device, and performs data de-duplication on said plurality of segments via a way to cluster a plurality of fingerprints in a data locality unit called container for the incremental changes, varied sampling rates of a plurality of segments by having a fixed sampling rate for stable segments and by assigning a lower sampling rate for a plurality of unstable target files of de-duplication, and a per-segment summary structure to avoid unnecessary I/Os involved in de-duplication.
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