Adaptive Data Replicas Management Based on Active Data-centric Framework in Cloud Environment

Cloud data protection is increasingly attracting researchers´ attention. Cryptographic-based schemes, trust third party technologies, policy-driven frameworks, and data-policy binding mechanisms have been proposed to address data security and privacy issues from many aspects of data protection requirement. However, due to the inevitability of bugs, crashes, operator errors, hardware failure, or server misconfiguration, data availability and reliability might be still compromised. To avoid data loss and access failure when the unpredictable incidents occur, data replication technology is essential to guarantee the availability and reliability. This paper introduces the adaptive data replicas management based on the novel data structure created by the active data-centric framework in the cloud scenario. The simulated result shows the effectiveness and flexibility of the proposed adaptive data replicas scheme.