Cross-user level de-duplication using distributive soft links

摘要

The amount of digital data has been increasing exponentially. There is a need to reduce the amount of storage space by storing data efficiently. De-duplication tends to save a lot of storage space in commercial applications like backup. De-duplication suffers from a serious disadvantage that data cannot be referenced across various locations. Soft links can be established only within a single disk that has been used for storage. In this paper we discuss cross level links that can be established across data which in turn is stored in a distributive manner. When user level data is stored across various volumes separated geographically a medium is required to reference data at the same time saving storage space. We implemented at file level de-duplication, a significant reduction in storage space was observed.