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• Fail-over is an automated operation that occurs when the Primary Controller is aborted or killed. Fail-over is applied in case of abnormal termination only, see JS7 - Impact of a Controller outage.
• Switch-over is an operation that is caused by user intervention in JOC Cockpit or by use of the JS7 - REST Web Service API. The procedure to switch-over does not require termination of an Active Controller Instance, instead it shifts the active role to the second Controller instance.

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• JS7 - Controller Cluster
• JS7 - Initial Operation for Controller Cluster
• JS7 - How to troubleshoot Controller Cluster Initial Operation
• JS7 - Management of Controller Clusters
• JS7 - Controller - Command Line Operation
• JS7 - Impact of a Controller outage