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On Mon, 09 Nov 2009 15:02:15 +0100, scott <sco### [at] scott com> wrote:
>
> Just depends on how it's been designed really, both electrical and
> mechanical systems can be rubbish or really reliable. I suspect as a
> very rough rule-of-thumb, the mechanical parts are more vulnerable to
> extreme shocks and vibrations, whilst electrical systems would be more
> vulnerable to static and extreme temperature/humidity.
In my experience, failure causes of cheap USB hard drives are almost
evenly split between the drive itself having mechanical damage and the USB
interface circuitry dying. Some enclosures are also vulnerable to
mechanical failure in the external connectors, typically the power
connector.
--
FE
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