In the late 1980's I helped to disassemble some old Wang computers and remove them from an office. They had GIANT 12" floppy drives and also tape drives -- tons of tape drives. These days nobody under 30 has heard of a Wang computer. The 12" floppy drives were obviously high tech in their day. Soon after there were 6" floppies followed by the 3.5" floppies in hard cases. Then there were ZIP drives, but ZIP drives didn't last long, because somebody figured out how to make CD's rewritable. I lived during a time when game graphics went through many stages. 3 color graphics. 16 color graphics. 256 color graphics. 16 million color graphics. 32 million color graphics. These technologies became available to the middle class over a period of only 10 years, and for the last 30 years there have been new video cards and new technologies available not just yearly but multiple times per year. I remember the first Voodoo video card, designed to work in tandom with an optional extra Voodoo. I had a friend who bought 2 of them and was able to run Quake at high speed. It was an amazing video game, a seriously awesome upgrade from games such as DOOM. I experienced Netscape in a community college library and didn't know what do to with it. It was before Google, and it was before Yahoo. I was there, but it was meaningless.
I used the 5" (5 1/4"?) floppies, first in 306K, & then in 1.2M.
They weren't very reliable for back up...lots'o read/write errors.
Zip drives were an improvement, but USB drives are the ultimate.
I can put all my records, op sys, op sys installation files, programs,
program installation files, & back-ups of all those going back to 1986
on one USB drive with room to spare.
And the USB drive is bootable on a computer running Win 98.