From owner-freebsd-hackers Thu Mar 5 23:06:10 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id XAA19978 for freebsd-hackers-outgoing; Thu, 5 Mar 1998 23:06:10 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id XAA19855 for ; Thu, 5 Mar 1998 23:05:52 -0800 (PST) (envelope-from grog@lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.8.7/8.8.5) with ESMTP id RAA13509; Fri, 6 Mar 1998 17:35:49 +1030 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.8.8/8.8.7) id RAA07228; Fri, 6 Mar 1998 17:35:47 +1030 (CST) (envelope-from grog) Message-ID: <19980306173547.64725@freebie.lemis.com> Date: Fri, 6 Mar 1998 17:35:47 +1030 From: Greg Lehey To: Karl Denninger , Niall Smart Cc: hackers@FreeBSD.ORG Subject: Re: SCSI Bus redundancy... References: <19980305125911.15755@mcs.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.89i In-Reply-To: <19980305125911.15755@mcs.net>; from Karl Denninger on Thu, Mar 05, 1998 at 12:59:11PM -0600 WWW-Home-Page: http://www.lemis.com/~grog Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 5 March 1998 at 12:59:11 -0600, Karl Denninger wrote: > On Thu, Mar 05, 1998 at 06:56:00PM +0000, Niall Smart wrote: >> On Mar 5, 12:09pm, Karl Denninger wrote: >>> Subject: Re: SCSI Bus redundancy... >>> >>> 1) The devices on the RAID arrays are high-availability required machines >>> (ie: primary NFS fileservers, News service, and the authentication >>> database machines). NONE OF THESE can afford to be down or crash. >> >> "NONE OF THESE"? Ever heard of Stratus Computer Corporation? >> >> Niall > > Actually, if I didn't care about the cost, Tandem makes some very good > fault-tolerant machines. Of course the problem is "if you don't care about > the cost". > > Reality is that building something 100% fail-proof is just not economically > justified in the ISP business. In other lines of work, it is. > > However, being able to swap a CPU in 5 minutes (the only non-redundant > component) Are you talking about Tandem? CPUs have always been redundant. Greg To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message