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On Sat, 24 Jan 2009 15:15:58 -0000, "Synapse Syndrome"
<synapse@xxxxxxxxxxxxxxxxxxxx> wrote:
>Jaimie Vandenbergh <jaimie@xxxxxxxxxxxxxxxxxxxxx> wrote:
>>
>> Many (most?) current 2.5" drives go another step, and actively push
>> the heads to the safe position if they detect that they're in free
>> fall or high-G (ie being clunked). Not only that, but they're often
>> rated for several hundred Gs of acceleration before they're outside
>> warranty - eg Seagate Momentus allow 300G while operating.
>
>
>But doesn't that require that the drive has an accelerometer(s), like a Wii
>controller or iPhone? My ThinkPad X40 has one (two?) so it puts the drive
>into park when it feels that it is being dropped. It also does that if you
>are using it in a car, unless you adjust the sensitivity. There is a
>Control Panel windows that you can open, and see a live 3D picture of the
>laptop being turned about.
>
>http://www.itstud.chalmers.se/~liesen/joystick/images/apsprops.png
>
>So this function is now included within the hard drive itself?
Hmm. I can't find a clear answer, which is likely an answer in itself.
Reading between the lines of the tech specs, it looks like most drives
will acknowledge a "panic" signal by making the heads safe - but the
hosting device is responsible for supplying the panic signal.
Cheers - Jaimie
--
Every time we start thinking we're the center of the universe, the
universe turns around and says with a slightly distracted air,
'I'm sorry. What'd you say your name was again?' -- Margaret Maron
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