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Engine

The Engine is a service that must be running before any scenario can start. It is installed on every server participating in any given scenario, meaning the Master (source) and Replica (target) hosts. Each Engine supports both Master and Replica functionality, for both Replication and High Availability scenarios. It may participate in multiple scenarios and serve in a different role in each scenario. Engines can be installed either locally on each host at a time, or through a remote installer on numerous hosts at once, and can be installed during scenario creation, if needed.