Automatic recovery from controller failures

If your controller fails or the system that it is running on fails, IBM® Z Workload Scheduler can transfer the controller function to another z/OS system that is running IBM® Z Workload Scheduler. The systems involved must be part of a cross-system coupling facility (XCF) sysplex. Control can be passed automatically when IBM® Z Workload Scheduler detects a tracker or z/OS system failure or can be initiated manually using the MODIFY operator command.

The standby system to which control is passed must have all the data used by the original controller available to it. This usually requires the use of shared DASD between the two systems. The new controller system must also have access to all other systems in the IBM® Z Workload Scheduler complex via XCF, VTAM®, or shared SUBMIT/RELEASE data sets. You must ensure that these links are available.

Also, the RACF® environment of the new controller z/OS system must be set up correctly to ensure that the level of user access to data from the standby system is correct.

For more details on IBM® Z Workload Scheduler hot standby, see IBM Z Workload Scheduler: Planning and InstallationIBM Z Workload Scheduler: Planning and Installation.