09MR3600, NGS(Next Generation Storage) System Research and Development,
Cheong Seung Kook
Abstract
RAID 시스템을 구축할 때 다양한 구성 방법과 구현 방법이 있다. RAID가 저장 시스템에 사용될 때 여러 조건에 따라 적절한 RAID 구현 방법과 구성 방법을 결정하기 위해서는 RAID 시스템의 성능 평가 결과가 필요하다. 또한, 저장 매체의 종류에 따라 RAID 시스템이 보이는 성능 특성을 분석함으로 효과적인 RAID 시스템을 구축할 수 있다. 본 논문에서는 RAID 시스템을 구현하는 소프트웨어 RAID와 하드웨어 RAID에 대해 레벨 0과 5에 대한 성능을 평가한다. 또한, HDD와 더불어 최근에 많이 사용되고 있는 SSD를 이용하여 RAID를 구축했을 때의 성능을 평가한다. 또, RAID 레벨 5에서 발생하는 오버헤드를 정의하고, 각 구현 방법에서 오버헤드를 계산한다. 본 논문의 결과는 성능과 신뢰성을 고려할 때 스토리지 시스템에 적합한 RAID의 구축 방법을 결정하는 기초 자료로 사용될 수 있다. 또한 본 논문의 결과는 DDR-SSD로 구성되는 RAID 시스템을 설계할 때 사용될 수 있다.
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