IBM Workload Scheduler domains

An IBM Workload Scheduler network consists of at least one domain, the master domain, in which the master domain manager is the management hub.

Additional domains can be used to divide a widely distributed network into smaller, locally managed groups.

In a single domain configuration, the master domain manager maintains communications with all of the workstations in the IBM Workload Scheduler network.

In a multi-domain configuration, the master domain manager communicates with the workstations in its domain, and subordinate domain managers. The subordinate domain managers, in turn, communicate with the workstations in their domains and subordinate domain managers. Using multiple domains reduces the amount of network traffic by reducing the communications between the master domain manager and other computers. Multiple domains also provide fault-tolerance by limiting the problems caused by losing a domain manager to a single domain. To limit the effects further, you can designate backup domain managers to take over if their domain managers fail.

When you define a new domain, you must identify the parent domain and the domain manager. The parent domain is the domain directly above the new domain in the domain hierarchy. All communications to and from a domain are routed through the parent domain manager.

The domain topology is described in a PARMLIB (DD name is EQQPARM) member with the workstation definitions; they are read by the batch job that creates the symphony file.