A data de-duplication access framework for solid state drives

Authors:
Chin-Hsien Wu;Hau-Shan Wu
Affiliations:
National Taiwan University of Science and Technology, Taipei, Taiwan;National Taiwan University of Science and Technology, Taipei, Taiwan
Venue:
Proceedings of the 2011 ACM Symposium on Applied Computing
Year:
2011

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Abstract

With the rapid development of SSDs (Solid State Drives), traditional hard drives in many applications have been replaced by SSDs. Since SSDs consist of NAND flash memory, the main challenge to SSDs is that NAND flash memory is highly sensitive to write requests. A lot of write requests will cause garbage collection to reclaim free space due to the "out-place update" characteristic of flash memory. In the paper, we will propose a data de-duplication access framework for SSDs. The objective is to eliminate duplicate data as much as possible and reduce space consumption. According to the experimental results, the proposed framework can efficiently identify duplicate data and decrease a lot of data written, and at the same time, the overhead is also reasonable.