Traditional Culture Encyclopedia - Traditional culture - How long is the storage period of CDs?
How long is the storage period of CDs?
It is difficult to guarantee the service life of aluminum coating. Once the protective film on the back of the CD is scraped off, the oxygen in the air will make the aluminum oxidized and black, which is difficult to preserve. The molecules of chromium oxide are very stable, and oxygen in the air has little effect on these compounds and is basically not oxidized.
Except for the optical disc with oxide coating, the optical disc with aluminum coating can hardly guarantee a long life. Even chrome-plated yellow discs have a service life of more than ten years, and other coated discs can be imagined.
Extended data:
Archives CD provides high-quality recordable CD products for digital protection and storage of important national documents. It is necessary not only to put forward high-standard technical requirements for the quality of archival CDs, but also to establish standard requirements for the use, preservation, data monitoring and migration of archival CDs, so that relevant departments can follow rules and laws when using archival CDs.
In order to prevent counterfeit and shoddy products, the Archives Science Research Institute of the National Archives Bureau and the National Engineering Research Center of Tsinghua University Optical Disc jointly established a joint laboratory of optical disc protection technology in July 2009, which provided technical support for the product quality appraisal and testing of archival optical discs. For each batch of archived optical discs, the Joint Laboratory of Optical Disc Protection Technology will provide third-party independent test reports, so that customers can use this kind of high-end recordable optical disc products with confidence.
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