Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934320AbXHGM5B (ORCPT ); Tue, 7 Aug 2007 08:57:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934247AbXHGM4f (ORCPT ); Tue, 7 Aug 2007 08:56:35 -0400 Received: from out2.smtp.messagingengine.com ([66.111.4.26]:35196 "EHLO out2.smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934241AbXHGM4c (ORCPT ); Tue, 7 Aug 2007 08:56:32 -0400 X-Sasl-enc: PXehxLLDivZ3OQFp/xBFbH9+4RJ2MjE9oYBqDpUg7h2p 1186491392 Date: Tue, 7 Aug 2007 09:56:29 -0300 From: Henrique de Moraes Holschuh To: Tejun Heo Cc: Michael Sedkowski , "Rafael J. Wysocki" , linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, linux-acpi@vger.kernel.org Subject: Re: Disk spin down issue on shut down/suspend to disk Message-ID: <20070807125629.GD30661@khazad-dum.debian.net> References: <1186411815.4355.7.camel@nx6310> <20070806150159.GC31615@khazad-dum.debian.net> <200708061732.03425.rjw@sisk.pl> <46B75459.9020204@gmail.com> <1186424492.4355.1.camel@nx6310> <46B76BBC.9010107@gmail.com> <1186438698.4402.6.camel@nx6310> <46B817AB.30105@gmail.com> <1186478319.3705.3.camel@nx6310> <46B83C0B.8050902@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <46B83C0B.8050902@gmail.com> X-GPG-Fingerprint: 1024D/1CDB0FE3 5422 5C61 F6B7 06FB 7E04 3738 EE25 DE3F 1CDB 0FE3 User-Agent: Mutt/1.5.16 (2007-06-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1063 Lines: 22 On Tue, 07 Aug 2007, Tejun Heo wrote: > emergency unload. Emergency unload does shorten the lifespan of the > disk but you don't have to worry too much about it. Disks are designed > to withstand certain number of emergency unloads. You *do* have to worry about it in any box you turn off daily. Desktop HDs will croak fast in that scenario, laptop HDs less so, but still too fast. A very good laptop HD can last about 20k emergency unloads (this is a unit that can do about 600k normal unloads in its lifetime). Desktop and server HDs don't even come close to those numbers, last time I checked. -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh - 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/