I have a main server with my Mysql database. This pc has raid drives, but no solution is safe enough, since the motherboard or any other component could die.
So I need to enable replication onto another PC in the lan. Question is:
If the main pc fails, what needs to be done to use the slave database? Does replication need to be disabled? Does some setting have to be changed or can it be used right away as if it was the main database?
In such a situation I would need to be able to set the system back up within maximum 3 minutes.