When the CD at the beginning of the 1980s replaced the vinyl record, the industry believed he had found a storage medium for eternity. Today his that know themselves as smoke and mirrors: German music archive registered, that is the oldest copies begin to decomposed. Therefore, the CD has not to prolong the life of a recording over the 200 years of a record, but drastically reduced to one-sixth. Thus, the durability of the silver disc is equal to the the tape that demagnetized for approximately 30 years. The same applies to video tape and DVD after all: private collectors who build their own music or film archive are hardly noticed the gradual loss of quality of the discs. Because the players can extrapolate the missing digital data from the rest of the track.
More problematic it looks, however, insurance companies and other companies for the archives of authorities, research and cultural enterprises, banks. Almost all of these institutions have their data in reliance on the technology digitized. Now that couldn’t come beforehand on a new medium to copy their data holdings (migrate), for the specific purpose of State of the art”is. Some specialty companies such as IBM deliver robots that continuously check data store and automatically restore in case of defects. This hochproffesionelle version of the backup is a three-digit amount per migrated disc however. Culture archive reflect already on the good old microfilm back but in a contemporary variant: it no longer comes to scan up the originals. Rather, documents, pages and images, such as currently are usual, compressed to a digital record; a laser writes it directly to the film. He is recorded as airtight as a master tape and protected from light; Copies are considered for use. The downside: The archive-laser procedure needs a laser unit. And as the movie that is likely to follow not more than one hundred years.