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Abstract

Cloud computing is technology defined as a computing system that deals with various services as IAAS, PAAS, SAAS and handles all resources which takes part in sharing. In cloud computing cloud storage is that storage where the data is retained in logical pools, the physical storage compasses multiple servers and the physical environment is typically maintained and supervised by a hosting company. Huge amount of data over cloud storage leads to insufficient use of cloud storage and cost of using cloud storage service is increasing side by side. When huge amount of is transferred then network bandwidth is more utilized. To elucidate this issue of data storage data de-duplication is one of the modern technologies in storage. Here different de-duplication approaches are discussed which reduces the storage and bandwidth required for data transfer.

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Keywords

Cloud computing, cloud storage, Data de-duplication, Metadata, Caching, De-duplicator