Review On Data Deduplication In Cloud Computing

Abstract

Data deduplication is a technique to improve the storage utilization. De-duplication technologies can be
designed to work on primary storage as well as on secondary storage. However, there is only one copy for each file
stored in cloud even if such a file is owned by a huge number of users. As a result, de-duplication system improves
storage utilization while reducing reliability. De-duplication with the use of chunking data that is passed through the deduplication engine is chunked into smaller units and assigned identities using cryptographic hash functions. Data
deduplication technique allows the cloud users to manage their cloud storage space effectively by avoiding storage of
repeated data’s and save bandwidth. The data are finally stored in cloud server. To ensure data confidentiality the data
are stored in an encrypted type using Advanced Encryption Standard (AES) algorithm.