Date: Sat, 22 Sep 2001 20:38:39 -0500 From: "David W. Chapman Jr." <dwcjr@inethouston.net> To: "Chad R. Larson" <chad@DCFinc.com>, "Daniel O'Connor" <doconnor@gsoft.com.au> Cc: "j mckitrick" <jcm@FreeBSD-uk.eu.org>, <freebsd-stable@FreeBSD.ORG>, "Nuno Teixeira" <nuno.mailinglists@pt-quorum.com> Subject: Re: hw.ata.wc && hw.ata.tags && softupdates short question Message-ID: <002501c143d0$78fa1b40$fe0c4042@inethouston.net> References: <20010921035414.B75668@dogma.freebsd-uk.eu.org> <XFMail.20010921122607.doconnor@gsoft.com.au> <20010922182052.B16388@freeway.dcfinc.com>
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As pointed out, its believed that IBM uses capacitors to fix this problem. > Years ago, there was a main-frame drive manufacturer who used the > spindle motor as a generator in the case of a power failure. The > kinetic energy in the spinning disk pack was converted to electricity, > so there would be enough energy to flush the cache to disk and then park > the heads. I think it was Century. You know, those drives that looked > like small washing machines and had removable disk packs? > > I wonder if any of the current PC drive manufacturers do (or have > considered doing) the same thing? > > -crl > -- > Chad R. Larson (CRL15) 602-953-1392 Brother, can you paradigm? > chad@dcfinc.com chad@larsons.org larson1@home.com > DCF, Inc. - 14623 North 49th Place, Scottsdale, Arizona 85254-2207 > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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