Long-term archiving of digital data on microfilm

Abstract

E-government applications have to archive data or documents for long retention periods of 100 years or more. This requires to store digital data on stable media, and to ensure that the file formats can be read by available software. Both applications as well as media technology have only short life spans. Thus, data has to be migrated at frequent intervals onto new data carriers and to new file formats. However, original file versions usually need to be retained permanently. In terms of cost, stability and technology independence, microfilm storage offers a promising solution for off-line storage. This paper reports on a feasibility study analysing encoding techniques that allow digital data to be saved onto microfilm, testing data recovery as well as cost issues.

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