From mboxrd@z Thu Jan 1 00:00:00 1970 From: Linda Walsh Subject: Re: SATA kernel-buffered read VERY slow (not raid, Promise TX300 card); 2.6.23.1(vanilla) Date: Sun, 06 Jan 2008 12:25:10 -0800 Message-ID: <47813926.6010908@tlinx.org> References: <477D9B6E.7060000@shaw.ca> <477D9D66.3080502@tlinx.org> <477DA05F.4080503@shaw.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from ishtar.tlinx.org ([64.81.245.74]:33484 "EHLO ishtar.tlinx.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753088AbYAFUZN (ORCPT ); Sun, 6 Jan 2008 15:25:13 -0500 In-Reply-To: <477DA05F.4080503@shaw.ca> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Robert Hancock Cc: LKML , linux-ide@vger.kernel.org Robert Hancock wrote: > > If this is a Seagate, I believe that they don't have AAM enabled on > any of their newer drives (something about a lawsuit for patent > infringement on that feature, or something). Quite likely they don't > support that power management command, either. -- Do you have a source for this -- haven't heard of such a conflict -- besides, doesn't ATA-7 require some of those functions? Given the trend toward power-saving and quieter (also usually less vibration) hard disks, I strongly disbelieve Seagate would remove those features -- especially since they are mentioned on Seagate's drive information page as being supported features.