From owner-freebsd-questions@FreeBSD.ORG Mon Mar 31 03:34:21 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1F6A7106564A for ; Mon, 31 Mar 2008 03:34:21 +0000 (UTC) (envelope-from dan@dan.emsphone.com) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.freebsd.org (Postfix) with ESMTP id CDEE88FC12 for ; Mon, 31 Mar 2008 03:34:20 +0000 (UTC) (envelope-from dan@dan.emsphone.com) Received: from dan.emsphone.com (smmsp@localhost [127.0.0.1]) by dan.emsphone.com (8.14.2/8.14.2) with ESMTP id m2V3YIJ2084968 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sun, 30 Mar 2008 22:34:18 -0500 (CDT) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.14.2/8.14.2/Submit) id m2V3YHZf084967; Sun, 30 Mar 2008 22:34:17 -0500 (CDT) (envelope-from dan) Date: Sun, 30 Mar 2008 22:34:17 -0500 From: Dan Nelson To: Wojciech Puchar Message-ID: <20080331033417.GH28690@dan.emsphone.com> References: <20080329131542.H80112@wojtek.tensor.gdynia.pl> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080329131542.H80112@wojtek.tensor.gdynia.pl> X-OS: FreeBSD 7.0-STABLE User-Agent: Mutt/1.5.17 (2007-11-01) Cc: freebsd-questions@freebsd.org Subject: Re: SCSI network 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, 31 Mar 2008 03:34:21 -0000 In the last episode (Mar 29), Wojciech Puchar said: > i have few Ultra160 SCSI controllers and two Ultra40, cables and few > machines that needs fast interconnect. i could use one gigabit card on each > machine+switch, but i already have it! > > can i make external SCSI bus through all machines and use it to transmit IP > packets? > > they are all adaptec (ahc driver) controllers - manual says it can be > target as well as initiator I've never seen a SCSI IP implementation, but I guess it's theoretically possible. Since SCSI uses a shared bus, though, the best you could get would be a half-duplex network. Gigabit NICs and a cheap unmanaged switch will work much better :) -- Dan Nelson dnelson@allantgroup.com