I guess that's one way of doing it. :)

Reading the ad it sounds more like a single HD floppy drive with something like a CD changer mechanism in front of it. Seems a little "optimistic" to describe it as hard disk fast, but I suppose technically an HD floppy's data rate (if formatted at a 1:1 interleave) is in the ballpark of a really old MFM hard drive with a 6:1 interleave XEBEC or similar controller. I am curious how fast it could switch disks and if a file could span floppies.

... Found a newsgroup thread about it. It is a changer, and it maps as 5 virtual drives. No spanning. I bet it'd be really painful to copy a big file between two of those disks...

Kinda like trying to doe something similar on the lobotomized 128k introductory model of the original 512k Macintosh? Automate that floppy-swap nonsense, HEH! ;D

Come to think of it, I would swear that I remember old ads for this same drive (or one very much like it) being sold for PC compatibles as a hard disk backup solution. It actually makes way more sense for that than as a primary storage device.