linux-kernel - Re: [patch 3/3] pata: "I do not think it means, what you think it means."

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Message-ID: <47D006A1.8070000@rtr.ca>
Date:	Thu, 06 Mar 2008 09:58:41 -0500
From:	Mark Lord <liml@....ca>
To:	Ville Syrjälä <syrjala@....fi>,
	Krzysztof Halasa <khc@...waw.pl>, Zan Lynx <zlynx@....org>,
	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>, jeff@...zik.org,
	linux-ide@...r.kernel.org, alan@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [patch 3/3] pata: "I do not think it means, what you think it
 means."

Ville Syrjälä wrote:
> On Thu, Mar 06, 2008 at 02:33:29AM +0100, Krzysztof Halasa wrote:
>> Zan Lynx <zlynx@....org> writes:
>>
>>> In my experience what they needed was proper cooling.  I have a 3ware
>>> RAID-5 array of 4 120 GB DeskStar drives still working.
>> I think the largest "deathstars" (75GXP?) were 75 GB.
> 
> AFAIK there were basically two series of deathstars. The original
> DTLA<something> and the more recent IC35<something>. The IC35 series
> were bigger (120GB is the most common size I've seen for those).
> Proper cooling and firmware upgrade usually fixed the deathstarness on
> both series. I still have some of both, not in active use for a year or
> two but still working. As a strange coincidence I was just pulling out
> some old data from them yesterday.
..

The original Deathstar ailment had nothing to do with firmware or cooling.
But rather, a bad batch of chips that IBM had the misfortune to use a lot of.

The chips would grow tiny internal whiskers over a period of 2+ years,
and eventually short circuit themselves.

My last one died here just a few weeks ago, after sitting on the shelf
for nearly all of it's life.  Never more than perhaps 40 power-on hours total,
and never enough to get very warm.

Cheers

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