The Control Service functions as the single-point-of-control of the Arcserve RHA operation, and it contains the entire data of the existing scenarios. In one Arcserve RHA scenario-system, one Control Service manages all scenario-related-tasks, and the Managers that are connected to it enable you to monitor the Arcserve RHA activities. If the Control Service is down, the scenario functioning is not affected. However, you are not able to control, manage and monitor the state and operation of the scenarios during this time. To overcome the danger of losing the Control Service data or losing the ability to manage and monitor your scenarios, Arcserve RHA offers you the Replication and HA Control Service scenarios. These scenarios enable you to protect the Control Service data and functionality, in the same way you protect other supported applications.
Arcserve RHA enables you to replicate the Control Service data, and to save the replicated data on a Replica host. In order to perform this, you need to create a Replication Control Service scenario. The Replication scenario also enables you to activate the Rewind option, and to recover lost Control Service data if necessary.
In addition, Arcserve RHA enables you to apply the HA solution to the Control Service. This means that if the active Control Service is down, you can switch the roles between the active Control Service and a standby Control Service, and make the standby Control Service the active one. For switching over and switching back the roles of two Control Services, you need to create an HA Control Service scenario.
Important! If you are running a Replication Control Service scenario, you cannot use a second Control Service to manage your scenario-related-tasks. To use a second Control Service when the first one is down, you need to initially install two Control Services, one as the active Control Service and the second as the standby Control Service. You also need to install two Engines, one on each Control Service machine, and to verify that they are running. Only then you can create and run HA Control Service scenario.
The creation of Replication and HA scenarios for Arcserve RHA Control Service is similar to the creation of Replication and HA scenarios for application and database servers. In both you are using the same step-by-step Scenario Creation wizard. However, there are some differences in the creation of Replication and HA scenarios for the Arcserve RHA Control Service, as follows:
To learn how:
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