My Altair 8800 running CP/M had a washing machine size hard driver. Air compressor,
big power draw, etc. Had a 5 MB fixed platter, and a 5MB removable platter. I think
was made by Shugart. Interface was parallel port (not printer port, but similar).
In its day, it was the cat's meow.
I still have that Altair, but not the drive. I replaced with a 5MB drive to a parallel port,
8" then 5". I also experimented with IDE interface and a 3.5" drive, but I do not
remember the capacity. Then the Altair got stored away. I have a bunch of them,
and some IMSAI 8080 (a better computer).