Earticle

초록

영어

A hybrid storage system consists of a small and fast solid state drive (SSD) and one or more slow and large hard disk drives (HDD). The purpose of a hybrid storage sys-tem is to exploit the IO performance of SSDs to enhance the overall IO performance with comparatively low cost. In a hybrid storage system, since the size of a SSD is small, the storage utilization for the SSD is very important to guarantee the performance of a hybrid storage system. Some existing hybrid storages use extents to manage a large storage efficiently. However, they cause an extent fragmentation problem. The extent fragmentation reduces the SSD utilization and the overall performance of a hybrid storage system. In this paper, to solve the problem we propose a new mapping method that uses different size of IO unit for SSD and HDDs. Also, we perform simulations to show that our proposed method guarantees better SSD utilization than existing methods.

목차

Abstract
 1. Introduction
 2. Related Work
 3. Proposed Mapping Method
  3.1. Overview
  3.2. Read and Write Operations
 4. Performance Evaluation
 5. Conclusion
 Acknowledgement
 References

키워드

저자

• In-Soo Bae [ Department of Computer Engineering, Korea National University of Transportation, Chungju, Chungbuk, Korea ]
• Yun-Su Lee [ 1Department of Computer Engineering, Korea National University of Transportation, Chungju, Chungbuk, Korea ]
• Seung-Kook Cheong [ Electronics and Telecommunications Research Institute, Daejeon, 305-700, Korea ]
• Yunsik Kwak [ Department of Computer Engineering, Korea National University of Transportation, Chungju, Chungbuk, Korea ]
• Seokil Song [ Department of Computer Engineering, Korea National University of Transportation, Chungju, Chungbuk, Korea ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Control and Automation

• 간기

  월간

• pISSN

  2005-4297

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605