Hot standby

If you connect your HCL Workload Automation for Z systems using the z/OS cross-system coupling facility (XCF), you can include one or more standby controllers in your configuration. A standby system can take over the functions of the controller if the controller fails or if the z/OS system that it was active on fails. You can create a standby controller on one or more HCL Workload Automation for Z controlled systems within the XCF group. Each standby system must have access to the same resources as the controller. These resources include data sets and VTAM® cross-domain resources. However, if EQQMLOG is allocated as a data set, it cannot be shared between the controller and standby controller. The standby system is started the same way as the other HCL Workload Automation for Z address spaces, but is not activated unless a failure occurs or unless it is directed to take over through a z/OS operator modify command. If you use one or more servers to remotely access the controller, note that the server must always run on the same system as the controller.