AN OPTIMAL DATA STORAGE METHOD IN THE CLOUD BACKUP SYSTEM

Abstract

An optimal method of data storage in the cloud backup system is presented based on the deduplication of the encrypted files. Deduplication of files that are backed up by different users is carried out using the data classification technique that allows to classify shared files and unique files by the popularity level. The popularity level is then identified by the threshold of the number of users that possess and backup the same file. The described deduplication approach helps to save cloud storage and network bandwidth by not uploading backups of files that are shared.