Abstract
Data deduplication is a mechanism or method for handling problems of data duplication especially in the storage elements. The duplicate chunks of data are eliminated such that it reduces the storage problems related to the original and its duplicates and the storage utilization is optimized. The duplicate data elements are assigned a single pointer element associated with the data by using a hash function. These pointer elements or any referencing elements are used to point to the unique data elements for maintaining the data integrity over all the data chunks. There are various chunking approaches, such as fixed and the variable size chunking approaches. Modifications in data chunk size lead to the boundary shift problem as the window slides and there are measures such as content defined control to handle the variable chunk size, in order to optimize the storage, throughput, and efficiency utilization.
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