X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf20aec.mail.bellsouth.net ([205.152.59.68] verified) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTP id 986842 for flyrotary@lancaironline.net; Mon, 06 Jun 2005 21:23:30 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.68; envelope-from=ceengland@bellsouth.net Received: from ibm62aec.bellsouth.net ([209.215.63.161]) by imf20aec.mail.bellsouth.net with ESMTP id <20050607012244.SNXU2220.imf20aec.mail.bellsouth.net@ibm62aec.bellsouth.net> for ; Mon, 6 Jun 2005 21:22:44 -0400 Received: from [209.215.63.161] by ibm62aec.bellsouth.net with ESMTP id <20050607012243.IJWA8050.ibm62aec.bellsouth.net@[209.215.63.161]> for ; Mon, 6 Jun 2005 21:22:43 -0400 Message-ID: <42A4F6DF.4030705@bellsouth.net> Date: Mon, 06 Jun 2005 20:22:39 -0500 From: Charlie England User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: EC2 dual power feeds References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Unfortunately, dead is not the only possible failure mode. Ian Dewhirst wrote: > Technically the failed CPU is off ;-) I thought the pilot was the > third CPU. > > -----Original Message----- > From: Rotary motors in aircraft > [mailto:flyrotary@lancaironline.net]On Behalf Of al p wick > Sent: Monday, June 06, 2005 8:17 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] Re: EC2 dual power feeds > > FWIW, I disagree . > -al > > On Mon, 6 Jun 2005 19:07:14 -0500 "Wendell Voto" > > writes: > > > > In order to have truly redundant EC2s would require a 3rd > CPU to monitor the two controllers and automatically > switch the failed unit off. Then what is going to monitor > the 3rd computer? > Wendell > > >