From owner-freebsd-stable@FreeBSD.ORG Mon Jun 27 02:34:17 2005 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 918DC16A41C for ; Mon, 27 Jun 2005 02:34:17 +0000 (GMT) (envelope-from scrappy@hub.org) Received: from hub.org (hub.org [200.46.204.220]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5ABE743D48 for ; Mon, 27 Jun 2005 02:34:17 +0000 (GMT) (envelope-from scrappy@hub.org) Received: from localhost (unknown [200.46.204.144]) by hub.org (Postfix) with ESMTP id 09ADA64B8BC for ; Sun, 26 Jun 2005 23:34:17 -0300 (ADT) Received: from hub.org ([200.46.204.220]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 74249-10 for ; Mon, 27 Jun 2005 02:34:11 +0000 (GMT) Received: from ganymede.hub.org (blk-224-176-51.eastlink.ca [24.224.176.51]) by hub.org (Postfix) with ESMTP id 9C30D64B899 for ; Sun, 26 Jun 2005 23:34:16 -0300 (ADT) Received: by ganymede.hub.org (Postfix, from userid 1000) id 33BBF47739; Sun, 26 Jun 2005 23:34:22 -0300 (ADT) Received: from localhost (localhost [127.0.0.1]) by ganymede.hub.org (Postfix) with ESMTP id 309A84695C for ; Sun, 26 Jun 2005 23:34:22 -0300 (ADT) Date: Sun, 26 Jun 2005 23:34:22 -0300 (ADT) From: "Marc G. Fournier" To: freebsd-stable@freebsd.org Message-ID: <20050626233114.G57847@ganymede.hub.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Virus-Scanned: by amavisd-new at hub.org Subject: SATA vs SCSI ... X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Jun 2005 02:34:17 -0000 looking at the specs between two cards, the SATA card(s) seem to rate ~100-150MB/s on each channel (if I'm reading right), with both the 3Ware and ICP cards having 4 individual channels ... looking at the SCSI cards, they are rated at 320MB/s, but that is total for the SCSI bus itself, right? So, if I have three drives on a SCSI bus, each 'maxing out evenly', I'd be cap'd at about the same 100MB/s per drive, no? In fact, looking at the SATA 2.x specs, each chanell there is rated at 300MB/s, which, again, if I could 'max out evenly', could seriously blow away the SCSI bus itself ... *If* I'm reading this right ... ? ---- Marc G. Fournier Hub.Org Networking Services (http://www.hub.org) Email: scrappy@hub.org Yahoo!: yscrappy ICQ: 7615664