Systems and methods are disclosed herein for performing a failover operation between a first distributed database cluster and a second distributed database cluster. The side bet is based on the outcome of a random event or multiple random events that takes place before the base casino game begins. When the second securing unit extends in the first direction through an engaging through hole in the fixture board, the biasing structure biases the second securing unit in a second direction opposite to the first direction, and the second securing unit engages the limiting structure.