상세정보
학술지
Software RAID for Data Intensive Applications in Cloud Computing
- 저자
- 송석일, 길기정, 곽윤식, 고대식, 정승국
- 발행일
- 201305
- 출처
- Journal of Internet Technology, v.14 no.3, pp.529-534
- ISSN
- 1607-9264
- 출판사
- Taiwan Academic Network Management Committee
- 협약과제
- 13VI1300, 에너지 절감 및 입출력 속도 향상 가능한 DRAM-SSD/HDD 하이브리드 스토리지 시스템 및 관리 솔루션 개발, 정승국
- 초록
- In this paper, we propose a software RAID to support data intensive applications in cloud computing. The proposed software RAID is based on DDR-SSD to enhance the performance of existing RAID systems. Also, we take the characteristics of DDR-SSD into account to design our software RAID. RAID level 5 which is generally used in data intensive applications has small write problems. In RAID level 5, to process a small write request, we need to read its parity block stored in disk, read old block, perform XOR operation, and write updated block and parity block. In this paper, we propose a differential-logging method which carefully considers the DDR-SSD to solve the small write problem in RAID level 5. We show that our proposed method out performs the existing software RAID through simulations.
- KSP 제안 키워드
- Cloud Computing, Data intensive applications, Level 5, RAID Level, Small write problem, Software RAID, XOR operation