state synchronization between two servers

huangrunlei

I am evaluating ICE and other middlewares for a new project. It is a typical monitoring and controlling system used in railway system. Two server will be used, one is active and the other is passive. the active server will receive and process information from field, then send the result to clients to render display. The passive server should become active automaticially once the active down. To implement it, the active server must synchronize a lot of state information to passive server. I am wondering if there is a convenient way to do the synchronization.
Is anyone here have experience about such thing?