Best way to handle when Production XI is in outrage/down
My production box is running smoothly now.If we want to go for any outrage and still we will be receiving many messages through internet from many partners.
So we are expecting how to receive the messages when production XI is in outrage. My client is thinking of putting one more instance with the replica of Production box. So that when the main production is in outrage then immediately they can switch back to this replica version and they can process the messages untill the main one get ready.
Now I am very much concern what are the implication will be if we go like this.
1. which is the best way to handle XI box to maintain when the system is outrage/down?
2. Is it a good idea of creating replica of production instance and maintaing this when the main one is in outrage?
Kindly suggest what you guys are doing for your implementations.