The Unique Bi-directional Failover
Failover is the process of which when the Primary station station in a clustering structure failos, its operation is switched to the Pre-defined Secondary station. For most server failover software products, this process is typically in one direction: from the Primary to the Secondary.
ClusterReplica Duo supports bi-directional failover. In its design, both binding stations can function as Primary station to failover to the other. This unique feature allows binding servers to protect each other so that additional cost in machines or extra work in configuration and managing a complicated clustering structure can be eliminated.
The key points for understanding the Bi-directional failover
- Configuration is done individually - Each of the binding servers in the ClusterReplica Duo structure configures for its own functions.
- Failover is processed by timely order - If failover is set on both stations, the one that fails first gets the right to carry out the process.
- Failback can be automatic or mannually done - When the failed station is re-connected to the clustering, users can choose to let ClusterReplica Duo to carry out the failback process or mannually switch the role from Standby to Master.
For detailed explanations, please read the examples.
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