In cloud and game servers, SSDs are used as cache on large capacity disk-based storage. In that configuration, the SSD can be exploited as write-back or write-through cache. Though the write-back cache can improve write performance significantly, data can be lost when the SSD fails. On the contrary, performance improvement is limited in the write-through cache though it has high reliability. By the way, reliability can be improved by applying RAID technique to SSD cache while exploiting write-back for better performance. In this paper, we analyse the reliability and the performance of hybrid storage using SSD cache over disk-based primary storage. In particular, we mathematically analyse reliability and also measure performance of real storage systems with various SSD cache configurations.

ABSTRACT
  1. 서론
  2. 하이브리드 스토리지의 고장률 분석
  3. 실제 시스템 상에서의 성능 비교
  4. 결론
  참고문헌

• 이은재(Department of Computer Science, University of Seoul) | Eun Jae Lee
• 이동희(Department of Computer Science, University of Seoul) | Dong Hee Lee Correspondence to