In for nickel in for a $? I began using computers in archaeology in
NYC shortly after the IBM PC was introduced. When the Compaq portable
(2 floppies, a green "color" graphics screen) came out it was
purchased with a Tallgrass 20 mb hard drive 20 mb tape backup stand
alone unit, and was used to backup inventories of artifacts created in
MDBS' KnowledgeManager. Other tape drives followed, though "backup"
was almost a foreign word in MS operations, like "unerase",
successfully created by Peter Norton. Tapes were used alot (much, isnt
a lot where they film?) and I think still viable (c. 1984).

In photography a study was done on slides. (Anecdote: I have "tourist"
slides on Fujifilm brought back from Japan from the early 1960's
[Satellite Kimono] by my U.S. Merchant Mariner grandfather that are
still pretty good) It was found that, if you showed slides alot, the
Fujifilm lasted longer than Kodak, though kept in storage the Kodak
slides, not shown, preserved images longer, according to I think
"Photography" magazine.