'bend!
> Das waren noch Zeiten als Festplatten noch ganze M�nner zur Bedienung
> brauchten...
>
> <http://www.gizmodo.com/archives/images/new_hard_drive.jpg>
>
> Seufz...
>
Noch ein bisschen Hintergrundwissen zu diesen Monstern:
"The picture is of a fixed-head disk, very similar to a Borroughs
unit I had the pleasure of disassembling (in 1975) after a
catastrophic head crash (I got authorization from Gordon Bell himself
to do it). It took me 3 days to whittle it down to nuts and bolts,
and the platter weighed 18 pounds. The hub upon which the platter was
mounted was phosphor bronze, and weighed an additional 17 pounds. So
imagine the inertia of 35 pounds spinning at 3600 RPM. It had
electric brakes, because if you just switched off the power, it would
spin for a loooong time. There is an (apocryphal) story of movers
just hitting the circuit breaker (not the off switch that engaged the
brakes), and after waiting the requisite 5 minutes for spindown,
loaded the drive into a truck. All the moves and hallways were right
angles, of course. Since brakes had not been engaged, it was still
spinning at 2000 RPM or so by the time it was loaded. When the truck
turned a corner, the drive precessed right out through the side of
the truck. It held a few megabytes at most, if I recall correctly (a
similar unit was used as a swap disk on the PDP-10, so it would have
held 256K or so). "
Das waren noch Zeiten als ein Hardwareschaden echten Schaden
anrichten konnte...
Bernd
Every cloud has a silver lining (except for the mushroom shaped ones,
which have
a lining of Iridium & Strontium 90)
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