From owner-freebsd-isp Sun Mar 23 8:13:47 2003 Delivered-To: freebsd-isp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id EDDB737B401 for ; Sun, 23 Mar 2003 08:13:45 -0800 (PST) Received: from rebecca.tiscali.nl (rebecca.tiscali.nl [195.241.76.181]) by mx1.FreeBSD.org (Postfix) with ESMTP id E06F343FCB for ; Sun, 23 Mar 2003 08:13:44 -0800 (PST) (envelope-from eric@monkey-online.net) Received: from eric.monkey-online.net (195-241-113-9-mx.xdsl.tiscali.nl [195.241.113.9]) by rebecca.tiscali.nl (Postfix) with ESMTP id 8DA9943FBDB for ; Sun, 23 Mar 2003 17:13:42 +0100 (MET) Message-Id: <5.2.0.9.0.20030323164230.047f5650@mail.monkey-online.net> X-Sender: eric@mail.monkey-online.net (Unverified) X-Mailer: QUALCOMM Windows Eudora Version 5.2.0.9 Date: Sun, 23 Mar 2003 17:13:55 +0100 To: freebsd-isp@freebsd.org From: Eric Veraart Subject: Server redundancy over 2 co-locations Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Hello, We currently have a few webservers at location 1, and are planning to place backup servers at location 2. Location 1 and 2 are seperated about 200km from each other. I want location 1 as the default location, and only put location 2 active when location 1 is down. This because location 2 is read-only, so the databases and documents on the two locations stay consistent. I've been looking at a few ways to achieve this; -The world famous F5 Networks 3-DNS controller; You pay for a lot of fancy things that I don't need, because it can ballance the connection over multiple locations, which I don't need. -Some sort of round-robin system, that runs on both locations (primary at location 1 and secondary at location 2) and checks if location 1 is still up, and otherwise points to location 2. I don't know if I'll get problems with TTL times, DNS caches etc with the round-robin system, or with the 3-DNS controller. What are your thoughts and experiences on this subject? Greetings, Eric To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message