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Old 04-08-2008, 03:17 AM
Larry
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Default Re: Replacement of PDA and phone

Jeffrey Kaplan <nomail@gordol.org> wrote in
news:nmqkv35m2if7ftbb1ll65rruj2454i5n9s@gordol.org :

> I would be leery of a mobile phone device with a hard drive. Hard
> drives are too fragile and unlike in laptops like the Toughbook and
> some Thinkpads, there isn't enough room to provide sufficient shock
> absorption.
>


That's not much of an issue in the last 10 years.

Here's specs for a 2.5" Western Digital 320GB drive:

"Environmental Specifications
Shock
Operating Shock (Read) 65G, 2 ms
Non-operating Shock 350G, 2 ms
Acoustics
Idle Mode 25 dBA (average)
Seek Mode 3 26 dBA (average)
Temperature (English)
Operating 32° F to 140° F
Non-operating -40° F to 149° F
Temperature (Metric)
Operating -0° C to 60° C
Non-operating -40° C to 65° C
Humidity
Operating 5-95% RH non-condensing
Non-operating 5-95% RH non-condensing
Altitude (English)
Operating -1,000 feet to 10,000 feet
Non-operating -1,000 feet to 40,000 feet
Altitude (Metric)
Operating -305M to 3,050M
Non-operating -305M to 12,200M
Vibration
Operating
Linear 20-300 Hz, 0.75 G (0 to peak)
Random 7-500 Hz (0.00221 g² / Hz)
Non-operating
Low Frequency 10-300 Hz, 0.195 inches (double amplitude)
High Frequency 300-500 Hz, 5.0G (0 to peak)"

350G is quite a fall onto something solid!
65G operating is simply amazing...

The first IBM drum memory I saw stored something like 8KB, was really
HUGE and crashed every time a truck went by within 1/2 a mile of it.
They wouldn't let us actually NEAR it, just look at it through a window
for fear we'd crash it.

I saw the inside of an iPhone. 65G of shock is a pipedream!



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