do any body has idea ?

I need my application to be balanced between two or more servers. it the request does not entertained by 1 server then that request should be served by an other server. like i need cluster of servers 2 or more. how this will be done ?

Please at least give some clue.

Thanks
Waseem

In order for this to work, you would need to setup a mysql cluster. Just google mysql cluster for documentation on that, once this is done, you would configure your store how you need it with its settings configured to use your cluster for your database.

Then you would copy your uploaded site files once you have them exactly how you to your second web server. For the HTTP load balancing, the best way would be to check with your server provider and see if they offer load balancing of one IP to two servers, if not, you need to configure "round robin" DNS for your domain to point it to two name servers. Again, google for more information =]