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CODA-POP
About selecting data carriers and choosing the best time when to refresh and convert digital files and when system migration is required.
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Abstract
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The aim of project CODA-POP was to produce guidelines within four areas:
• Criteria for when it is time to refresh digital files
• Selection criteria for data carriers
• Criteria for when to transcode (convert) to new logical file formats
• Criteria for when system migration is required
The results were:
A list of nine different aspects for when to refresh files, divided into three criteria concerning preservation, and six criteria regarding efficiency improvement. The report also contains some suggestions for further work in this area.
Three documents with the aim to improve and simplify the process of choosing data carriers have been made: one for simplifying and improving the selection process, one that defines the ‘Total cost of ownership” of data carriers and finally a table to evaluate and compare various data carriers.
A list of criteria for when to convert files into new file formats was created. Also, the process when to initiate this work has been described, and a table to fill in when checking if the file format used is in danger.
The work with the fourth area resulted in a list of nine criteria, useful as warning signals for when system migration is required. We also argue about the need of a written action plan describing how critical each criterion is, as well as how to act when any of the warning signals occur.
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