Re: Quantum 120at hdisk noise

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#11858

From: Buck Martin
Date: Tue, 26 Jan 1993 10:46

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In <93025.46905.LJ01066@LMSC5.IS.LMSC.LOCKHEED.COM> LJ01066@LMSC5.IS.LMSC.LOCKHEED.COM writes:

> I have a Quantum 120AT harddisk that as it sits idle always makes this
> sound about every 20 seconds like the head is scanning the platter and
> then it's silent again until the next time.  Is this normal. If anyone
> knows let me Know by e-mail or post.  Thanks in advance.
> 
I also have a Quantum harddisk which makes the same sound.

In a booklet from Fujitsu I read that 'modern' HDDs (opposed to the old
ones with stepper-motor) do a 'thermal recalibration' which means that the
harddisk searches for the location of some tracks from time to time
(because these locations can change, when the drive gets hot).

So I think this is normal (though I don't understand why this has to be
done so often ?!?).

+-----------------------------------+-----------------------------+
| Martin Buck                       | Internet:                   |
| Student of electrical engineering |                             |
| University of Ulm, Germany        | S_BUCK@RZMAIN.RZ.UNI-ULM.DE |
+-----------------------------------+-----------------------------+

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From: S_BUCK@rzmain.rz.uni-ulm.de (Buck Martin)
Subject: Re: Quantum 120at hdisk noise
In-Reply-To: LJ01066@LMSC5.IS.LMSC.LOCKHEED.COM's message of Mon, 25 Jan 93 13:01:45 PST
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Organization: University of Ulm, Germany
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Date: Tue, 26 Jan 1993 10:46:19 GMT
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