| Posted by prashant1979, 08-03-2010, 03:46 AM | | One of our customers have a requirement of a failover setup so that if the main server goes down, the second server should automatically take over. Both the servers would be in a different geographic location. The application running on the server would be a web based application. What are the options available? The server would be a Windows 2003 server.
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| Posted by bekanosky, 08-03-2010, 04:34 AM | | Very interesting question.
I'd like to know the answer too
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| Posted by CaroNet-Hesham, 08-03-2010, 06:55 AM | | Have you got the facility to accommodate global load balancing?
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| Posted by prashant1979, 08-03-2010, 08:44 AM | | Can you explain this a bit?
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| Posted by CaroNet-Hesham, 08-03-2010, 08:50 AM | | I means DNS based global load balancing which control a domain DNS and can automatically change it if health check at one location fails
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| Posted by prashant1979, 08-03-2010, 08:57 AM | | IMHO, DNS based load balancing is not fool proof as the website will be still down at some places due to the DNS caching. How can we tackle it? Do you know of any hardware or software to be used for failover setup?
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| Posted by lockbull, 08-03-2010, 02:23 PM | | You're going to need to use a DNS based solution. There are BGP based solutions (and most of the big boys use a combination of DNS and BGP based solutions), but, no offense, if you're coming here asking for help, then you're not qualified to tackle that approach. You generally need your own ASN, or at least a very clued in provider, and the knowledge to set this up is not commonplace. It's not for the person who has a single server and wants to failover to another server; it's more appropriate for failing over entire datacenters.
Here's a good overview of the situation with DNS:
http://www.networkcomputing.com/wan-...lity-check.php
This issue has also been discussed several times here, so I encourage you to search the archives.
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| Posted by skullbox, 08-03-2010, 02:29 PM | | He's right. You'd probably be served best using a few hardware based devices like F5 load balancers. There are some open-source ones but they can be hard to configure if you it's your first rodeo.
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| Posted by NicAddress, 08-03-2010, 03:18 PM | | We are using F5 BIG-IP/Infoblox devices for this.
Got $?
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| Posted by Steven, 08-04-2010, 04:46 PM | | Find a datacenter who has multiple locations who can anycast for you. Voxel comes to mind. Steadfast also.
Voxel gave me a reasonable quote when I asked about it.
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