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A dramatic shift is underway in how organizations use computer storage. This shift will have a profound impact on storage system design. The requirement for storage of traditional transactional data is being supplemented by the necessity to store information for long periods. In 2005, a total of 2,700 petabytes of storage was allocated worldwide for information that required long-term retention, and this amount is expected to grow to an estimated 27,200 petabytes by 2010. This paper reviews the requirements for long-term storage of data and describes an innovative approach for developing a highly scalable and flexible archive storage system using Commercial Off-The-Shelf (COTS) components.
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