From owner-freebsd-questions@FreeBSD.ORG Mon Apr 9 00:33:17 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 E2F3916A403 for ; Mon, 9 Apr 2007 00:33:17 +0000 (UTC) (envelope-from youshi10@u.washington.edu) Received: from mxout5.cac.washington.edu (mxout5.cac.washington.edu [140.142.32.135]) by mx1.freebsd.org (Postfix) with ESMTP id BFA8A13C46E for ; Mon, 9 Apr 2007 00:33:17 +0000 (UTC) (envelope-from youshi10@u.washington.edu) Received: from smtp.washington.edu (smtp.washington.edu [140.142.33.9] (may be forged)) by mxout5.cac.washington.edu (8.13.7+UW06.06/8.13.7+UW07.03) with ESMTP id l390XHMr027046 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Sun, 8 Apr 2007 17:33:17 -0700 X-Auth-Received: from [192.168.10.45] (c-24-7-142-221.hsd1.ca.comcast.net [24.7.142.221]) (authenticated authid=youshi10) by smtp.washington.edu (8.13.7+UW06.06/8.13.7+UW07.03) with ESMTP id l390XG85011797 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Sun, 8 Apr 2007 17:33:16 -0700 Message-ID: <461989C9.8010103@u.washington.edu> Date: Sun, 08 Apr 2007 17:33:13 -0700 From: Garrett Cooper User-Agent: Thunderbird 1.5.0.10 (Windows/20070221) MIME-Version: 1.0 To: freebsd-questions@freebsd.org References: <46192C1B.4060706@u.washington.edu> <20070408230454.GB17305@thought.org> <461976B7.2060808@u.washington.edu> <200704081917.14052.freebsd@dfwlp.com> In-Reply-To: <200704081917.14052.freebsd@dfwlp.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-PMX-Version: 5.3.0.289146, Antispam-Engine: 2.5.0.283055, Antispam-Data: 2007.4.8.172433 X-Uwash-Spam: Gauge=IIIIIII, Probability=7%, Report='__CT 0, __CTE 0, __CT_TEXT_PLAIN 0, __HAS_MSGID 0, __MIME_TEXT_ONLY 0, __MIME_VERSION 0, __SANE_MSGID 0, __USER_AGENT 0' Subject: Re: Automatic means for spinning down disks available? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Apr 2007 00:33:18 -0000 Jonathan Horne wrote: > On Sunday 08 April 2007 18:11:51 Garrett Cooper wrote: > >> Gary Kline wrote: >> >>> On Sun, Apr 08, 2007 at 10:10:17PM +0400, Yuri Grebenkin wrote: >>> >>>> Just wonder if it's better for an HDD not to spindown at all. >>>> Maybe it's safer to spin in peace than to park/launch? >>>> What do you think? >>>> >>> My guess (really a SWAG) is that it's bettter to leave things >>> just happily spinning, 24*7. In Nov, '99 a power off//on >>> destryed my new (105-day-old) 9G SCSI drive. Off ffor fewer >>> than five seconds, then a spike or two, and the drive went >>> deadder than a decade-old corpse. Lost 10 months of files. >>> ((Well, my tape backup had flubbed up.)) >>> >>> Who would know??? I've heard both sides, and so far, just >>> leaving drive spin seems slightly better. >>> >>> {Futureistic[?] idea: maybe a new drive can have a mode of >>> Full-Operation and (slower) Spin. It wouldn't take more than >>> a second to transition from the slow-spin to full-op mode. >>> Open files, OS states, and whatever could be stored to RAM... . >>> >>> Any little old winemakers, er, diskmakers out there? >>> } >>> >> Good point. The worst stress points during a disks life are at spin-up >> from what I've read. >> >> Also, about the disk spinning at different speeds: many contemporary >> disks have "acoustics" levels where you can adjust the speed on demand >> (assuming you knew the hardware level instructions to send to the >> controllers). Unfortunately I don't know those settings, so I can't say >> what is and isn't possible. >> >> The only upside is at least all disk makers seem to be amalgamating into >> either: Fujitsu, Hitachi, Quantum, Seagate, and WD, so figuring out the >> standards shouldn't be *too* hard =). >> >> -Garrett >> >> >>> gary-the-thrifty >>> >>> >>>>> Hello again all, >>>>> I was wondering if there was an automatic, and possibly timed means to >>>>> spin down disks available in either ports or the base system, by >>>>> chance. Just trying to cut down on energy use, and increase my disks' >>>>> lives :). TIA, >>>>> -Garrett > personally, my solution for solving the "lower power consumption but still > remotely available" issue, by configuring Wake On Lan. my web server is > always on, so i just installed net/wakeonlan there. simple lines in crontab > wake all the rest of my hosts each morning (after im gone to the office of > course) for backups, and then they all power themselves back down about 2 > hours later. during the day, if i need to get to a system while im still > remote, i just log into the webserver and wake it backup again. > > 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). But then again that's my take on stuff :). -Garrett