From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761686AbYENIN1 (ORCPT ); Wed, 14 May 2008 04:13:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753812AbYENINN (ORCPT ); Wed, 14 May 2008 04:13:13 -0400 Received: from slowhand.arndnet.de ([88.198.19.76]:55255 "EHLO mail.unitix.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753151AbYENINL (ORCPT ); Wed, 14 May 2008 04:13:11 -0400 X-Greylist: delayed 1462 seconds by postgrey-1.27 at vger.kernel.org; Wed, 14 May 2008 04:13:11 EDT Message-ID: <482A995C.7040806@arndnet.de> Date: Wed, 14 May 2008 09:48:44 +0200 From: Arnd Hannemann User-Agent: Thunderbird 2.0.0.14 (X11/20080505) MIME-Version: 1.0 To: Jan Engelhardt CC: Arnd Hannemann , Roland , tvrtko@ursulin.net, pernegger@gmail.com, snitzer@gmail.com, zorglub_olsen@hotmail.com, renatoyamane@mandic.com.br, linux-kernel@vger.kernel.org Subject: Re: WD doesn`t use disks with Linux - was Re: Re:Western Digital GreenPower drives and Linux References: <003201c8b53c$67ff02d0$6400a8c0@bui.materna.com> <482A062B.3010308@arndnet.de> In-Reply-To: X-Enigmail-Version: 0.95.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Jan Engelhardt wrote: > On Tuesday 2008-05-13 23:20, Arnd Hannemann wrote: >> Well the answer was probably just from a first level support person so >> nothing one should get excited about. >> Anyway to the high Load_Cycle_Count; if I understood the technology >> correctly the WD GreenPower drives are exactly "Green" because they > > I don't find it Green when I have to buy new disks because of > their detrimental parking technique. > >> unload the heads on a plastic ramp (no landing zone!) quite often during > > ramp or LZ, it's quite a force with which the head is parked. > Well I'm no expert, but I would say comparing to the normal wear out due to use (seeking, bearing wear out, vibrations, spin up, bumps) the factor of a controlled unload/load cycle on a plastic ramp is probably negligible. BTW: my hitachi notebook drive, which I believe has a similar load/unload technology has: > 193 Load_Cycle_Count 0x0032 057 057 000 Old_age Always - 258528/258360 And it didn't fail on me yet... Of course this is just one data point. Regards, Arnd Hannemann