Here is the definition of archival medium from the Society of American Archivists: Note that it specifies a thing, not a process, although they acknowledge on their website that the two are often confused. There are three archival media: paper, film and phonograph records. Of those, the most stable is paper but all are capable of storing information for 100 years and retreiving it using relatively simple technology. Simply storing electronic information in multiple locations does not make that an archival medium. We are going to discover ourselves in a huge hole when, in 75 years, we realize there hasn't been a vast library of notes, letters, documents, family photograph albums, film movies and sound recordings that have been saved to document the 21st century. They exist for the 20th century.