I have a LAMP server with a lot of hardware redundancy built in. I am not worried about the server becoming unavailable. What I am worried about, however, are potential network issues in the data center the server is in. What I would like to have is another server in another data center for redundancy. Load balancing is less of a concern.

With that said, I am relatively clueless on two points:

1. How to have two servers in two geographically separate data centers that have exactly the same data, in terms of both files and MySQL databases.
2. How to ensure that all traffic coming into one data center are automatically transferred to the other database in the case of a network or server failure at the first data center.

Any guidance on how to accomplish the above two problems would be greatly appreciated.