This is the result of "more bits-per-inch", which is the natural result of going from 4TB-per-drive to 20TB-per-drive. Yes, I'm skipping a few steps, but that'

This is the result of "more bits-per-inch", which is the natural result of going from 4TB-per-drive to 20TB-per-drive. Yes, I'm skipping a few steps, but that's the fundamental issue at play here. There's more platters, more bits per inch, more read / write speed at the same 7200 RPM. Its not a lot, but its a steady increase as hard drives keep getting denser and denser.