Do hard drives fail from open covers?

Then your brain is broken. If you can provide storage to your customers at, say, $.10 per megabyte, doesn't it stand to reason that if you could provide those megabytes on _one_ platter, that the machinery would be cheaper than using _two_ platters for the same data per drive?

Thanks, Rich

Unfortunately, I neglected to collect one of those diagrams when I worked at CDC MPI. But, yeah, the heads flew at

50 microinches - they tested their flying height by looking at the interference fringes with a monochromatic lamp and glass disk.

And they had, "flying height, smoke particle, dust particle, human hair" and, yes, a human hair is about 3000 microinches.

Well, Ida know. It was 0.000050 back then - what are they flying them at these days? I thought that was the thickness of the boundary layer!

Thanks, Rich

My favorite tech support call wasn't computerz, but it waz electronicz. ;-)

I was a video game repair tech. (also jukeboxes, pinball machines, pool tables, Foosball tables, Wak-A-Mole machines, etc, etc, etc...) And I did phone support when a guy has a game in his own shop, but doesn't have a tech. [C == customer, M == me] C: Uh, hi. The machine don't power up. M: OK. Is it plugged in? C: Yup. M: Did you check the fuse? C: Yup. M: Do you have volts at the fuse? C: Uh, no. M: Do you have volts at the power switch? C: Uh, lemme go check that... [background - sound of game powering up and self-testing] C: Guh-Hyuk! Uh fiyuxed it! An' Uh ain't even a-gonna tell ya whut uh diyud!

--
Cheers!
Rich

Of course, but do they really wipe their ass with squirrels?

-- Cheers! Rich ------ "An angst-ridden amorist, Fred, Saw sartorial changes ahead. His mind kept on ringing With fishy girls singing; Soft fruit also filled him with dread." -- J. Walker, "The Love Song Of J. Alfred Prufrock"

Dewd! Did you see that movie too?

"Five!" "oeryhtuopve?" "Five!!!!!" "oiutnubnio!!!!" "*POW* *POW* *POW* *POW* *POW*"

--
Cheers!
Rich

The nominal mechanical spacing in advanced, experimental heads is less than 10 nanometers, or less than 0.4 microinches. I don't know the exact values, but current commercial products use spacings smaller than

1 microinch. At those dimensions and the typical linear velocities of 30 m/s (about 60 mph), the air no longer acts as a Newtonian fluid. They claim that the head and disk surfaces are smooth enough that the 10nm value is a meaninful number, and measurements are often presented with 1 angstrom resolution..

I don't recall the cost of the packs, but the drives were about $45K in

1987 dollars.

Uhhh, no. I was just trying to make up something to illustrate a point.

What movie?

-

----------------------------------------------- Jim Adney snipped-for-privacy@vwtype3.org Madison, WI 53711 USA

-----------------------------------------------

"The Deer Hunter". Very very weird movie about the craziness in Veitnam at the time. Christopher Walken had gone AWOL, and was working in some town playing Russain Roulette for the entertainment of the Vietnamese folks. They'd place bets on whether he was going to blow his brains out.

Well, it was getting frenetic - he was doing like two chambered rounds, and the odds went way up. Then he did three, and the odds skyrocketed. Then, in all of the excitement, he goes, "Five! How about five!" And the locals say something incomprehensible, but they're obviously all excited - he puts five bullets in the gun, and realizes that there are five "captors", so: *POW* *POW* *POW*

*POW* *POW* he dusts the five guys and escapes.

Cheers! Rich

I remember working with this type of drives 2 decades ago. We fondly call them washing machines, can't remember the oem but they are called Zebra. They are fun to work with at the same time p.i.t.a., but they taught me all I need to know about hard disks. Being unsealed type, it was possible to replace individual heads and that's where the fun begins!

So interesting that POW also stands for... :-)

Tom

Oh, THAT movie. That's one I've always meant to rent and just never did. Now you've gone and ruined it for me. Drat! ;-)

-

----------------------------------------------- Jim Adney snipped-for-privacy@vwtype3.org Madison, WI 53711 USA

-----------------------------------------------

Yeah, after intalling the $1200 alignment pack after replacing a head and screeeeeeeeechsssssss&&t. :)

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The 5 in the chambers rouletted game did not happen in town. Happened when DeNiro et al were prisoners and forced to play at gunpoint under threat of a hideous torture death. DeNiro kept upping the number of bullets until he had enough to shoot the Vietnamese and escape with his buddies.

empty

Troll

Yes, if the consumer wants half the size.

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