Disk as Tape Archive
Tape is unreliable, specialized, slow, low density, not improving fast, and expensive
Using removable hard drives to replace tape’s function has been successful
When a “tape” is needed, the drive is put in a machine and it is online. No need to copy from tape before it is used.
Portable, durable, fast, media cost = raw tapes, dense. Unknown longevity: suspected good.
Slide courtesy of Brewster Kahle, @ Archive.org