From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1RBtuc-0002pU-LJ for garchives@archives.gentoo.org; Thu, 06 Oct 2011 19:47:22 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 5B4EC21C272; Thu, 6 Oct 2011 19:46:39 +0000 (UTC) Received: from mail-qw0-f53.google.com (mail-qw0-f53.google.com [209.85.216.53]) by pigeon.gentoo.org (Postfix) with ESMTP id CADAA21C10C for ; Thu, 6 Oct 2011 19:44:21 +0000 (UTC) Received: by qafi31 with SMTP id i31so4469159qaf.40 for ; Thu, 06 Oct 2011 12:44:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=/nXiojjNi7DEgfTBy1mNS0RGXbNK2tByRwp1WdColak=; b=Kba4rtk0qxNwCfgEtEJxb0o7791iex2AuYG/rk+3Iw+5NTIHMGjDOgBxB4GJkfIldQ nJdzJMHA8B+1GxyrL9g/Z/60YeWba0fThZeDye3HaQU+V8RdZpulAr9T2mRuD/7ibiPo x+ED0Z2vglNsjXwdcofOE4qAXHXFO+e/bRdOw= Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Received: by 10.224.200.69 with SMTP id ev5mr888606qab.135.1317930261252; Thu, 06 Oct 2011 12:44:21 -0700 (PDT) Received: by 10.224.80.209 with HTTP; Thu, 6 Oct 2011 12:44:21 -0700 (PDT) In-Reply-To: References: <4E8DFE1B.6060403@gmail.com> Date: Thu, 6 Oct 2011 12:44:21 -0700 Message-ID: Subject: Re: [gentoo-user] How can I power disk off? From: Mark Knecht To: gentoo-user@lists.gentoo.org Content-Type: text/plain; charset=UTF-8 X-Archives-Salt: X-Archives-Hash: a99fa66d6d5e568370b2de5bf00896a3 On Thu, Oct 6, 2011 at 12:38 PM, Paul Hartman wrote: > On Thu, Oct 6, 2011 at 2:14 PM, Jarry wrote: >> Hi, >> >> In my server I have a few disks which must be running 24/7, >> but I also have a single big hard-drive, which is used only >> for a few minutes every day, just for backups. How could I >> power disk off when not needed (and "on" again when needed) >> in order to save a little power and prolong its life? > > Use hdparm to set the power-saving level. Also look into general > power-saving tips for linux laptop users which may help reduce > unnecessary accesses to that drive. Maybe even use laptop-mode-tools. > Paul, Would hdparm be advisable if the drive was part of a RAID? I suspect not. I don't think this applies to the OP but for the sake of discussion why not include RAID as part of the solution, if possible. - Mark