Optical discs such as BD-R, DVD-R, or CD-R have been used for many archival occasions from private archive, software back-up, or to store digitized archives, because of the unique features such as authenticity or long lifetime expectancy. However, the most remarkable feature,that the data conditions can be monitored by measuring the error rate and ISO standard defines the safe level of error rate,is not widely known. In other words, data conditions become visible, and archival suitability at the data creation and during storage can be accurately estimated when the operation follows the ISO guideline. The author explains advantages of using optical discs for archiving and how to get the most out of supporting guidelines in this article.
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