[pengaru]

> F1 engines are rebuilt after every race.

Even if what you said were true, so what?

We're talking about a tiny spinning disc on a brushless hub motor. There's basically a single moving part, maybe a few more if riding on ball bearings.

Do you have any understanding of what is going on inside a many-cylinder internal combustion piston engine spinning at 20k rpm? We can view the flywheel as the hard disk platter equivalent, the real madness is at the reciprocating mass being flung back and forth at the same rate.

Edit: Here's another useful reference point to help put RPM numbers into perspective: a turbocharger's rotating assembly spins on the order of 200-300k RPM without flying apart. A minute is a pretty long time.

[jquery]

You're underselling what HDDs do. The seeks they have to do are so precision, if you made the hard drive the size of the earth, the "head" would still only be a couple meters from the ground and it would have to go any square meter on the entire earth in 1/100 of a second. It's absolutely incredible that the tiny SATA bay in my computer holds an 18TB drive. That's 18 * 8 trillion bits of data, or if the hard drive had the surface area of the earth, 282 bits per square meter.

This precision structure has to be maintained at 10k RPM. Can it be maintained at 20k RPM? Maybe not so easily. Let's not undersell the technology.

[pengaru]

You're ignoring the statement I'm actually responding to:

"Part of the problem is keeping the platters together at those speeds"

I'm not speaking to seeking or precision at all, only pointing out there's not really any challenge in keeping the platters together at these speeds.

[jquery]

okay, i guess in my mind I automatically translate “coming apart at those speeds” to “the microstructure stretches to a degree it’s impossible to read/write to the drives”. Nothing catastrophic.