> I think when most people say "hard disk", they usually mean rotating discs that use magnetism to store data.

while i would personally avoid referring to an SSD as a "hard disk", i was attempting to interpret the original claim in the most charitable possible fashion, since it was utterly absurd if interpreted strictly.

Either way, I learned something. I can picture an array of 20 disks sustaining 2GB/s, but you aren't going to fit 20 disks into a laptop. I didn't realise a high-end SSD could get there, or even how much better regular SSDs are for throughput. (That cost per TB, though!)