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Abstract
Cloud backup service provides offsite storage for the users with disaster recovery support. De duplication methods are used to control high data redundancy in backup dataset .Data de duplication is a data compression approach applied in communication or storage environment. Limited resource level and I/O overhead are considered in the de duplication process. Data redundancy is controlled using Application aware Local-Global source Deduplication (ALG-Dedupe) scheme. File size filter is used to separate the small size files. Application aware chunking strategy is used in Intelligent Chunker to break the backup data streams. The deduplication scheme is enhanced with security features as Security ensured Application aware Local-Global source Deduplication (SALGDedupe) scheme. Encrypted cloud storage model is used to secure personal data values. Deduplication scheme is adapted to control data redundancy under Smart Phone environment. File level deduplication scheme is designed for global level deduplication process.