From owner-freebsd-questions@FreeBSD.ORG Tue Jun 22 07:04:54 2004 Return-Path: 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 6EB1D16A4CE for ; Tue, 22 Jun 2004 07:04:54 +0000 (GMT) Received: from hobbiton.shire.net (hobbiton.shire.net [206.71.64.250]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4FB8043D53 for ; Tue, 22 Jun 2004 07:04:54 +0000 (GMT) (envelope-from chad@shire.net) Received: from [67.161.247.57] (helo=[192.168.99.66]) by hobbiton.shire.net with asmtp (TLSv1:RC4-SHA:128) (Exim 4.10) id 1BcfKl-0006DN-00; Tue, 22 Jun 2004 01:04:43 -0600 In-Reply-To: <7B04A918-C419-11D8-AB72-003065A70D30@shire.net> References: <20040621132006.2b1a296f.wmoran@potentialtech.com> <20040621172520.3544d6fe.wmoran@potentialtech.com> <7B04A918-C419-11D8-AB72-003065A70D30@shire.net> Mime-Version: 1.0 (Apple Message framework v618) Message-Id: <6D90314C-C41A-11D8-AB72-003065A70D30@shire.net> From: "Chad Leigh -- Shire.Net LLC" Date: Tue, 22 Jun 2004 01:04:39 -0600 To: Bill Moran X-Mailer: Apple Mail (2.618) Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on hobbiton.shire.net X-Spam-Status: No, hits=-1.4 required=5.0 tests=BAYES_20 autolearn=no version=2.63 X-Spam-Level: cc: FreeBSD-questions Subject: Re: What's the best possible email failover solution X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jun 2004 07:04:54 -0000 On Jun 22, 2004, at 12:57 AM, Chad Leigh -- Shire.Net LLC wrote: > > On Jun 21, 2004, at 3:25 PM, Bill Moran wrote: > >> >>> You'd be much better off with some sort of NAS in a raid >>> config, even if it were home grown, to store the spools. >> >> We already have a "home-grown NAS" (just a FreeBSD box with Vinum >> RAID) but >> it doesn't protect me if the machine with the drives has a power >> supply or a >> mobo or a CPU go south. I don't know if a NAS is any more reliable >> than a >> PC, but it's still a single point of failure. > > Yes, but your scenario of losing all the mail before the backup if > something goes poof is covered. In other words, if a CPU or a MB goes > poof, you do not lose your mail stores. Your RAID disk protects you > against that. Your mail may not be accessible while you replace a MB > or CPU or PS (get redundant PS), but you do not lose it, which is the > failure you wanted to protect against. And keep an extra MB, CPU, PS, etc around so you can swap them out if necessary without lots of downtime... Chad