Owner's Manual

Design

HA involves the following four components:

• Role determination logic

• Messaging and transport infrastructure for checkpoints

• Initial snapshot and ongoing event synchronization for checkpoints

• Reconciliation during role transition from standby to active

When implementing this feature, be aware of the following design principles:

• The active controller determines the action to take and the standby server relies on the active

controller.

• The reconciliation process minimizes the impact to data traffic.

• To be processed by the controller, the data must be valid .

Role Determination

The software uses a deterministic mechanism to decide which controller is the active controller. It also

performs heartbeat checks and handles role transitions.

Supported Technologies and Protocols