인터넷의 발달로 사용자는 원격지에 있는 컴퓨터에 24시간 접속할 수 있게 되었고 이에 따라 무정지 시스템에 대한 요구가 커지고 있다. 또한 이를 위해서 디스크와 호스트를 온라인으로 탈부착하는 기술에 대한 연구도 진행되고 있다. 이 논문은 스트라이핑으로 데이터를 저장하는 시스템에 온라인 디스크 부착을 할 때, 소프트웨어적인 부가적 작업을 줄일 수 있는 방법을 제안한다. 제안하는 방법은 SZIT라 불리는 메타데이터와 계산식을 이용하여 매핑하기 때문에, 전통적인 수식 기반 매핑 방법과 같이 빠른 매핑을 할 수 있으며, 디스크 확장으로 인한 전체 데이터를 재구성하는 오버헤드를 제거하는 장점을 가진다.
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