[ale] HELP!!! /HDA DISASTER!

[jeff hubbs]

Maybe things have changed, but it has been my understanding that disk 
drives are at a normal 1 atm, open to the outside through a dense filter.

John Mills wrote:

> Hi again -
> 
> On 29 Jan 2002, James P. Kinney III wrote:
> 
> 
>>But since the space containing the spinning drive is not air, but an
>>inert gas like helium to eliminate contamination and friction, the speed
>>of sound will be much higher.
>>
> 
> It _might_ be inert gas, but I'll bet against helium, since the
> &^%$#!! stuff is almost impossible to contain: it diffuses even through
> metal at a significant rate!
> 
> Nitrogen is easier to get and live with, but my guess is they start with
> dry, clean air and vent the drives through filter material which stops the
> largest dirt, at least for consumer products.
> 
> Regards -
>  John Mills
> 
> 
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