Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763585AbXKJD2T (ORCPT ); Fri, 9 Nov 2007 22:28:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753161AbXKJD2M (ORCPT ); Fri, 9 Nov 2007 22:28:12 -0500 Received: from srv5.dvmed.net ([207.36.208.214]:53770 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750869AbXKJD2L (ORCPT ); Fri, 9 Nov 2007 22:28:11 -0500 Message-ID: <47352540.2060104@garzik.org> Date: Fri, 09 Nov 2007 22:28:00 -0500 From: Jeff Garzik User-Agent: Thunderbird 2.0.0.5 (X11/20070727) MIME-Version: 1.0 To: "Maciej W. Rozycki" CC: Alberto Gonzalez , Linux Kernel Mailing List Subject: Re: Laptop's HDD References: <200711040002.25784.info@gnebu.es> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -4.4 (----) X-Spam-Report: SpamAssassin version 3.1.9 on srv5.dvmed.net summary: Content analysis details: (-4.4 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1154 Lines: 31 Maciej W. Rozycki wrote: > On Sun, 4 Nov 2007, Alberto Gonzalez wrote: > >> The problem comes from a very high rate of load/unload cycles of the heads >> that reaches the 300.000-600.000 limit in 2-3 years (with smartmontools it >> can checked it with "smartctl -A /dev/sda") . There are reports of HDD dying >> even earlier for this problem [2] > > I use: > > # hdparm -B 255 /dev/hda > > to get rid of the problem with an ATA disk where I do not care that much > about power consumption. I do not know what the equivalent for a SATA > disk would be, but chances are it will be easier to track it down with the > reference above. Although other power management features exist for SATA, for most hdparm stuff PATA and SATA are pretty much the same. Same command set, simply a new bus over which to transmit the commands. A great deal of early SATA is actually bridged PATA, even. Jeff - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/