Timeout expired. The timeout period elapsed prior to completion of t

Hi Guys,

I have a problem scenario, i need your help.

We have 2 web server which are in cluster and we have 2 database which are in mirror.

we used 3 tier architecture, in DLL we used xsd files. When load is increses in our site following exceptions starts logging in our log files.

" Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding."

it's occurence starts increases then site goes down.

can anybody help me how to tackle/ solve this error.

Thanks in advance.