Information processing system

Abstract

Deduplication is executed in a storage device having low random access performance, such as an optical disk library. When an optical disk that is not inserted into an optical disk drive needs to be accessed in order to execute binary compare, data to be binary compared is stored in a temporary memory area in order to postpone the binary compare, and on the timing when the optical disk is inserted, the postponed binary compare is executed. Before second deduplication, which is deduplication between data to be stored in the storage device and the data in the optical disk library, is executed, first deduplication, which is deduplication between the data to be stored in the storage device and the data in the temporary memory area, is executed.

Description

technical field [0001] The present invention relates to an information processing system that performs deduplication to reduce the capacity required for storing data. Background technique [0002] Currently, in various business groups such as corporations, government agencies, and schools, various forms of electronic data such as electronic documents (electronic files) and e-mails are used to conduct business. In the context of the popularization of the Internet and the transfer of paper documents to electronic data, the data volume of these electronic data is increasing rapidly. In addition, with the enactment of laws defining the obligation of long-term storage of electronic data, and the trend of long-term storage of various electronic data for use in business, electronic data to be stored (archived) in storage media for a long period of time is increasing. Business organizations need to store (archive) these rapidly increasing electronic data for a long period of time w...

AI Technical Summary

Problems solved by technology

However, in terms of random access performance (throughput rate performance, response performance) of tape libraries and optical disk libraries, because there are cases where physical movement of storage media is required, it is very low compared to disk array devices that do not physically move storage media at all.

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