From mboxrd@z Thu Jan 1 00:00:00 1970 From: Francois Barre Subject: Re: multiple Sata SATAII 150, TX4 - how to tell which drive is which?headaches galore! Date: Tue, 24 Jan 2006 18:21:44 +0100 Message-ID: References: <43D62360.5060001@dgreaves.com> <20060124161043.e90064b0@ted.secure-tunnel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Return-path: In-Reply-To: Content-Disposition: inline Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids > Some drives do support quiet vs. performance modes. > > hdparm will set this for you, however, from the hdparm manual page: > > -M Get/set Automatic Acoustic Management (AAM) setting. Most modern > harddisk drives have the ability to speed down the head move- > ments to reduce their noise output. The possible values are > between 0 and 254. 128 is the most quiet (and therefore slowest) > setting and 254 the fastest (and loudest). Some drives have only > two levels (quiet / fast), while others may have different lev- > els between 128 and 254. THIS FEATURE IS EXPERIMENTAL AND NOT > WELL TESTED. USE AT YOUR OWN RISK. > > Good luck! > > Gordon > Did it ever work for you ? I may be unlucky, but I never seen this work for any of my drives. Or maybe my ears are always polluted, and I hear the heads move even in my dreams :-p....