Authors : P. Neelaveni and M. Vijayalakshmi
Abstract: Cloud backup service is the core technology of cloud storage. Cloud backup service is becoming the substantial component of the cloud storage due to emerging trend of user data. Data deduplication techniques are ideal solutions for reducing both bandwidth and storage space requirements for cloud backup services in data centres. The main challenges to be considered in cloud backup services when deduplication is applied are bandwidth, high throughput, computational overhead, deduplication efficiency, read and write efficiency, backup window size and transmission cost. Similarly, in cloud backup services, during virtualization process, deduplication can be done to reduce the storage amount consumed by virtual machine images. When deduplication is performed in VM images, there are issues like high duplicate tracking, space overhead and high computation power that has to be considered. This study investigates the benefits and overhead of various deduplication technique adopted to the cloud backup services.
P. Neelaveni and M. Vijayalakshmi, 2014. A Survey on Deduplication in Cloud Storage. Asian Journal of Information Technology, 13: 320-330.