From owner-freebsd-questions@FreeBSD.ORG Mon Apr 9 16:58:19 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id E562516A400 for ; Mon, 9 Apr 2007 16:58:19 +0000 (UTC) (envelope-from apatewna@yahoo.gr) Received: from deliver.hol.gr (deliver.hol.gr [62.38.3.65]) by mx1.freebsd.org (Postfix) with ESMTP id 6211113C44B for ; Mon, 9 Apr 2007 16:58:19 +0000 (UTC) (envelope-from apatewna@yahoo.gr) Received: from auth-smtp.hol.gr (takeit02.mail.dc.hol.net [192.168.20.72]) by deliver.hol.gr (8.12.11/8.11.6) with ESMTP id l39GwCkV018213 (using TLSv1/SSLv3 with cipher DHE-RSA-AES256-SHA (256 bits) verified OK); Mon, 9 Apr 2007 19:58:12 +0300 Received: from [192.168.1.20] (ppp153-247.dsl.hol.gr [89.210.153.247]) (authenticated bits=0) by auth-smtp.hol.gr (8.13.1/8.12.11) with ESMTP id l39GwEPX006224; Mon, 9 Apr 2007 19:58:15 +0300 Message-ID: <461A70BB.9060109@yahoo.gr> Date: Mon, 09 Apr 2007 19:58:35 +0300 From: Apatewna User-Agent: Mozilla Thunderbird 1.5.0.10 (Windows/20070221) MIME-Version: 1.0 To: Garrett Cooper References: <46192C1B.4060706@u.washington.edu> <20070408230454.GB17305@thought.org> <461976B7.2060808@u.washington.edu> <200704081917.14052.freebsd@dfwlp.com> <461989C9.8010103@u.washington.edu> In-Reply-To: <461989C9.8010103@u.washington.edu> Content-Type: text/plain; charset=ISO-8859-7; format=flowed Content-Transfer-Encoding: 8bit X-Virus-Scanned: ClamAV 0.90/3054/Mon Apr 9 17:31:59 2007 on takeit02.mail.dc.hol.net X-Virus-Status: Clean Cc: freebsd-questions@freebsd.org Subject: Re: Automatic means for spinning down disks available? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: apatewna@yahoo.gr List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Apr 2007 16:58:20 -0000 O/H Garrett Cooper έγραψε: >> >> i would agree that the greatest stress on a disk might just be while >> its turning on from cold... but with the warranties that seagate is >> offering these days, i feel bold enough to power them off/on at least >> once a day. > Well, I feel the same but only about WD's drives. Seagate's newer drives > seem to die a lot more frequently than they used to (I've had 4 / 7 > Seagate drives die on me in the past few months and 1/6 WD drives die on > me). > Lately there has been a report on hard-disk failures from Google's own system usage. http://www.lockergnome.com/nexus/blade/2007/03/03/google-hard-drive-failures-high-temps-may-not-cause-failures-maybe/ There is also this abstract from 5th USENIX Conference on File and Storage Technologies http://www.usenix.org/events/fast07/tech/schroeder.html Just watch out for those slim sized 3,5" Maxtor disks. Several of the 20G and 40G models, in a 5-year time span, crashed and burned in customers' PCs with 0% data recovery. Also there has been some problem with SATA cabling (the data cable). Brand new SATA2 disks on eight brand new PCs, randomly experiencing slow OS boot or reporting problems finding files. Shortly after a disk developed bad sectors and noticing similar problems on the other PCs, I swapped all SATA cables with different ones. I have yet to hear a complaint. -- RTFM and STFW before anything bad happens _________________________________________ Thanos Rizoulis Electronic Computing Systems Engineer Larissa, Greece FreeBSD/PCBSD user