Hard Disk Drives (HDD’s) are one of the most impressive and important electromechanical devices ever created. The mechanics of HDD vibration is an obscure subject, and as a result, there is an aura of mystery surrounding vibration ...
HPsquared•2mo ago
The numbers are always mind-boggling to me. The precision, speed and reliability, all in a cheap mass-produced object. I suppose when you compare it to the chips themselves, those are also amazing. But HDDs just seem like they should be impossible.
rubatuga•2mo ago
Bought some 26TB HAMR drives recently. It uses solid state lasers to heat up the drive before writing. I shucked them from some Seagate external drive enclosures so we'll see how long my data will last. They're so new there's no failure data on them
SoftTalker•2mo ago
I remember when I bought my first hard drive. It held 20MB and I was sure I’d never fill it.
nefarious_ends•2mo ago
I recall a video of a guy temporarily reducing hard drive performance by shouting at it
curl -I -X GET www.ept.ca/features/everything-need-know-hard-drive-vibration/
curl: (28) Failed to connect to www.ept.ca port 80 after 75027 ms: Couldn't connect to server
Not using any VPNs from my end
hinkley•2mo ago
It seems like drives would be better off with their own built in isolation. Wonder why it doesn’t work out that way. Elasticity of the materials and the gap between the axle and the arm? Space?
rasz•2mo ago
Some laptops, Toughbooks and Thinkpads come to mind, mounted drive on foam pads or in rubber gaskets. A lot of MFM era drives up to mid eighties used to suspend mechanical part on rubber isolated posts.
hinkley•2mo ago
Thinkpads also introduced accelerometers to park the heads when a laptop leaves a desk before it can hit the ground. Seems like at some point they decided the extra square millimeters were more useful for something else, like making the laptop a half a mm thinner.
jmpman•2mo ago
The best drive enclosures I’ve worked on used laminated steel. Steel-plastic-steel in order to absorb the vibrations. Worked great, but for some reason this isn’t widely used in the industry, as if the laminated steel guys don’t have good sales people.
ahartmetz•2mo ago
My main desktop computer is in an Antec P180 case. Most / all? of its outer panels are made of aluminum - plastic - aluminum material. They make a particular dull sound when knocked.
jmpman•2mo ago
I’m talking about drive enclosures made by storage companies. The EMC, NetApp, IBM, HP type of places. Consumer grade cases all use the cheapest sheet metal they can find.
ahartmetz•2mo ago
The P180 has these walls for their sound dampening properties. The material is for sure not cheaper than mild steel, which is what cheap cases are made of.
asdefghyk•2mo ago
HPsquared•2mo ago
rubatuga•2mo ago
SoftTalker•2mo ago