Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 17 Apr 2002 13:47:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 17 Apr 2002 13:47:17 -0400 Received: from borg.org ([208.218.135.231]:12177 "HELO borg.org") by vger.kernel.org with SMTP id ; Wed, 17 Apr 2002 13:47:17 -0400 Date: Wed, 17 Apr 2002 13:47:16 -0400 From: Kent Borg To: "Jeff V. Merkey" Cc: Alan Cox , nick@snowman.net, Baldur Norddahl , Mike Dresser , linux-kernel@vger.kernel.org Subject: Re: IDE/raid performance Message-ID: <20020417134716.D10041@borg.org> In-Reply-To:

<20020417102722.B26720@vger.timpanogas.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 17, 2002 at 10:27:22AM -0700, Jeff V. Merkey wrote: > From my analysis with 3Ware at 32 drive configurations, you really > need to power the drives from a separate power supply is you have > more than 16 devices. They really suck the power during initial > spinup. It seems an obvious help would be to have the option of spinning up the drives one at a time at 2-3 second intervals. I know a fast drive doesn't get up to speed in 3 seconds, but the nastiest draw is going to be over by then. A machine with 32 drives is pretty serious stuff and probably isn't booting in a few seconds anyway--another 60-some seconds might be a desirable option. Does this exist anywhere? Would it have to be a BIOS feature? -kb - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/