This is an excellent article on long term preservation. It is argued that a period of 100 years constitutes an appropriate temporal frame of reference for addressing the problem of semantic aging. Ongoing format migration constitutes currently the best option for temporal scaling at the semantic level.
Digital preservation focuses on finding solutions that scale well along the temporal dimension. In the pre-digital world, the preservation of written records over long periods of time depended on several factors:
- The record needs to be preserved physically
- The ability to read the record and language need to exist
- There must be a community that still shows interest in the record
- Media aging: Any medium that carries a digital encoding will physically deteriorate until it is no longer possible to recover the original bit stream.
- Semantic aging: The evolution of data formats and the fact that knowledge about data semantics quickly disappears if not specified explicitly.
- Cultural aging: The community loses interest in some content; the documents are no longer retrieved, and is not maintained and transmitted any more, its loss is almost unavoidable
- find strategies to access digital contents from the past 50 years in spite of aging factors
- plan the preservation of currently accessible digital content for future use the next 50 years
"Taking cultural ageing seriously means to abandon the idea that digital preservation operates like a time capsule. The picture of content that is enclosed in a digital capsule to be opened at some moment in the future is misleading because it is not the past that sends messages to the future. Rather, it is the present that makes choices, selecting content from the past and linking to it. This ongoing process of linking from the present into the past makes up digital heritage."
- The Twelve Principles of Digital Preservation (and a cartridge in a repository…)
- Investing in Curation. A Shared Path to Sustainability. Final RoadMap
- Preserving Our Digital Heritage
- How Long Is Long-Term Data Storage?
- Storage Trends Around Computex 2015
- Fighting entropy and ISIL, one image at a time
- Dataliths vs. the digital dark age
- Millenniata Announces Results of ISO/IEC 10995 Standard Tests
- Start-up to release 'stone-like' optical disc that lasts forever