Free Space Management of Dedup-based PCM Storage Devices
Date Issued
2014
Date
2014
Author(s)
Lin, Chun-Ta
Abstract
There is a growing demand to introduce more and more intelligence to storage devices in recent years, especially with the rapid increasing of hardware computing power. This paper explores essential design issues in space utilization together with the deduplica- tion technology over emerging non-volatile memory PCM. In particular, we exploit data deduplication and indexing of potential data duplicates over PCM-based storage devices to provide more storage space than the physical storage space does. A space manager is proposed to have a good balance between the system performance and the space utiliza- tion. The rationale behind the design is based on the fact that a storage system initially has more free space but less knowledge in data deduplication. It implies the value of space optimization should only grow with the time in device usages. The proposed design is evaluated over popular benchmarks, for which we have very encouraging results.
Subjects
相變化記憶體
儲存系統
重複數據刪除技術
儲存管理
Type
thesis
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