In this abstract, we propose ALG-Dedupe, an Application-aware Local-Global source deduplication scheme that not only exploits application awareness, but also combines local and global duplication detection, to achieve high deduplication efficiency by reducing the deduplication latency to as low as the application-aware loc al de-duplication while saving as much cloud storage cost as the application-aware global deduplication. Our application-aware deduplication design is motivated by the systematic deduplication an alysis on personal storage. We observe that there is a significant difference among different types of applications in the personal computing environment in terms of data redundancy, sensitivity to different chunking methods, and independence in the deduplication process. Thus, the basic idea of ALG-Dedupe is to effectively exploit this application difference and awareness by treating different types of applications independently and adaptively during the local and global duplicate check processes to significantly improve the deduplication efficiency and reduce the system overhead.
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