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Date:      Wed, 29 Feb 2012 20:53:57 +0300
From:      "Dmitry S. Kasterin" <>
To:        jb <>
Subject:   Re: hard disk behavior
Message-ID:  <>
In-Reply-To: <>
References:  <>

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2012/2/29, jb <>:
> Hi,
> I very often hear this metallic (mechanical) clicking from my hard disk when
> it is active. I experience this behavior under FreeBSD only (not other OSs).
> Is there any way to figure out what it means ?

Some time ago I had a similar problem with an external WD Scorpio Blue disk.
As my point of view, it tends to park its heads too often, even under
heavy load,
so this results in a clicking.

As far as I remember, you can check Load_Cycle_Count from SMART output.
Take some measurements during minute or two. Rapid growth of this parameter
indicates a problem.

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