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Message-Id: <202211272112.2ARLCnsk013242@critter.freebsd.dk>
To: Warner Losh <imp@bsdimp.com>
cc: FreeBSD User <freebsd@walstatt-de.de>,
        FreeBSD CURRENT <freebsd-current@freebsd.org>
Subject: Re: CAM: extract HDD informations about failure/to fail?
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From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
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--------
Warner Losh writes:

> It close to impossible to isolate the drive making the noise. 

Use a long thin piece of hard wood as a stethoscope.

I keep a 30cm length of 6mm beech dowel in my tool-chest,
but in a pinch you can use a pencil or the shaft from an
art-brush.

Press one end agaist the little piece of cartilage which
can close into your ear, and hold the other end against the suspect
disk-drive, and you hear if there are any mechanical issues.

It also works for fans, motors, bikes etc.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.