From owner-freebsd-questions@FreeBSD.ORG Mon Mar 27 15:18:59 2006 Return-Path: X-Original-To: freebsd-questions@FreeBSD.org Delivered-To: freebsd-questions@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id A4E3616A420 for ; Mon, 27 Mar 2006 15:18:59 +0000 (UTC) (envelope-from conrads@cox.net) Received: from eastrmmtao06.cox.net (eastrmmtao06.cox.net [68.230.240.33]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3E4F143D4C for ; Mon, 27 Mar 2006 15:18:57 +0000 (GMT) (envelope-from conrads@cox.net) Received: from serene.no-ip.org ([68.14.59.177]) by eastrmmtao06.cox.net (InterMail vM.6.01.05.02 201-2131-123-102-20050715) with ESMTP id <20060327151854.ZCFJ9108.eastrmmtao06.cox.net@serene.no-ip.org> for ; Mon, 27 Mar 2006 10:18:54 -0500 Received: from localhost (localhost [127.0.0.1]) by serene.no-ip.org (8.13.4/8.13.4) with SMTP id k2RFIuej049146 for ; Mon, 27 Mar 2006 09:18:56 -0600 (CST) (envelope-from conrads@cox.net) Date: Mon, 27 Mar 2006 09:18:51 -0600 From: "Conrad J. Sabatier" To: freebsd-questions@FreeBSD.org Message-Id: <20060327091851.05f83d4f.conrads@cox.net> X-Mailer: Sylpheed version 2.2.3 (GTK+ 2.8.16; amd64-unknown-freebsd6.1) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Subject: Western Digital combination usb/firewire hdd 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, 27 Mar 2006 15:18:59 -0000 I just added a 320-gig Western Digital external hard disk drive to my amd64 RELENG_6 system (as /dev/da0). The OEM docs recommend connecting both the USB *and* the firewire cables for optimal performance, which I've done. What I'm wondering is: how does FreeBSD deal with such a setup? Does it favor one connection over the other, or does it actually use both? It seems I'm getting firewire throughput on the device (at bootup dmesg reports 50 MB/s transfer rate, rather than the slower 12 MB/s USB rate). The device is working just fine, but I'm just curious about this, if anyone has any clues. Thanks! -- Conrad J. Sabatier -- "In Unix veritas"