Nice to have some History Buffs around here.
Just bought a western Digital 3 $b drive that rotates at...intellipower...( slower than 7200 rpm )-- at Micro Center on special for $109.
running it with a Kingston SSD holding the OS and a /Home on the WD .
The technologies sure appear to be marching onward. Things tend to blur on past systems owned by me. First mass storage my first Z80 System at 3.3mhz., had was a dual drive 8 inch floppy disk system. If memory is correct. System had four 4K RAM cards I built from kits. That was back in I believe 1975 or so.