3 ms·
> but a spinning-disk drive looks 100 times more complicated to me to manufacture. Fun-fact: The "head fly height", i.e. the distance from the underside of the
by blattimwind 8y ago
> but a spinning-disk drive looks 100 times more complicated to me to manufacture.
Fun-fact: The "head fly height", i.e. the distance from the underside of the R/W head to the platter surface, is less than a handful nanometers in most hard drives; this makes the gap not just smaller than any production transistor, but also smaller than any production feature size.
- iamgopal 8y agoHow?
- captainperl 8y agoBoundary-layer aerodynamics. The head is literally flying on a cushion of air.
- 6nf 8y agoIf two surfaces are flat enough and moving fast enough, the tiny amount of air (or helium these days) causes them to act hydrodynamically and float across each other which is great cause there's zero friction which means they never wear out. The spindle in a hard drive is also an air bearing.