The Control Service functions as the single-point-of-control in the Replication or High Availability operation. It contains the entire dataset of the existing scenarios. The Control Service communicates with the Engines and the Managers. It is responsible for the management of all scenario-related-tasks, such as, creation, configuration, monitoring, and running of the scenarios.
The Control Service receives requests from the Managers, processes them, converts them to particular commands, and passes them on to the Engines. Then, the Control Service receives up-to-date data and events from the Engines, and sends back information and statistics about the scenario's state to the Manager.
The Control Service is also responsible for the authentication and authorization of users. It can also serve as a central point for report handling and storage. The information and statistics that are accumulated by the Control Service can be presented to the user through the Overview Page, Manager, Report Center and PowerShell.
All the scenario files are kept on the server that runs the Control Service. If the Control Service is down, the scenario functioning will not be affected. However, for receiving information about the scenario's state, the Control Service must be active. For best results, install the Control Service on a standalone host. If this is not possible, you can install the Control Service on either the Master or Replica servers. However, if the server is down, the connection with the Control Service is lost and scenarios will be unmanageable.
You may protect the Arcserve RHA Control Service in separate scenarios. For more information, see Protecting the Control Service in the Arcserve RHA Administration Guide.
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