Date: Thu, 21 Oct 2010 16:03:35 +0100 From: Bruce Cran <bruce@cran.org.uk> To: Dag-Erling =?ISO-8859-1?Q?Sm=F8rgrav?= <des@des.no> Cc: Alexander Best <arundel@freebsd.org>, mav@freebsd.org, Tijl Coosemans <tijl@coosemans.org>, Oliver Fromme <olli@lurza.secnetix.de>, freebsd-hackers@freebsd.org Subject: Re: Summary: Re: Spin down HDD after disk sync or before power off Message-ID: <20101021160335.00001c0a@unknown> In-Reply-To: <86vd4v7gx1.fsf@ds4.des.no> References: <201009161742.24228.tijl@coosemans.org> <201009161619.o8GGJAmv035378@lurza.secnetix.de> <20101018155944.GA12425@freebsd.org> <868w1r92rf.fsf@ds4.des.no> <20101021122110.GA65490@freebsd.org> <86zku77mj6.fsf@ds4.des.no> <20101021135442.000054c9@unknown> <86vd4v7gx1.fsf@ds4.des.no>
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On Thu, 21 Oct 2010 16:35:06 +0200 Dag-Erling Sm=F8rgrav <des@des.no> wrote: > Really? That would make the system close to unusable, and the disk's > life expectancy would be reduced to a few months; a disk that performs > two load / unload cycles per minute on average will need replacing > after three to six months. Remember, there was a huge flap a couple > of years when Ubuntu shipped with a default timeout of 90 seconds, > which is more than ten times more than what you suggest. The Ubuntu issue was what I was thinking of - I got that mixed up with the aggressive power management of the WD EARS drives. --=20 Bruce Cran
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