Does anyone here have any experience with the same site on multiple servers in different datacenters around the world? Just looking at ways to get around DOS attacks on nodes etc.

So the DNS setup for that domain name would be ns1, ns2 [server1], ns3 and ns4 [server2] etc. I'm wondering if ns1 is always pulled first or whether ns3 or ns4 could get the call depending on location etc. Of course this is only for static html pages with no database components etc.

Thanks

The best way to do this is using a GSLB solution from RadWare, Alteon or F5.

If, like most people, you do not have have an extra $50k-$100k to implement that solution, then another option is to use a DNS solution. Which works somewhat okay, but does have some problems. This has been discussed multiple times on this board, take a look at:

http://www.webhostingtalk.com/showthread.php?s=&threadid=33301

http://www.webhostingtalk.com/showthread.php?s=&threadid=28780

Of course, as a solution against DoS attacks the DNS solution won't work very well, because you can still be DoS'd at multiple locations. You are better off signing onto a provider who has a firewall with rulesets specifically designed to fight DoS attacks.