Note: VRM Device control applies only to CPU jobs, because it reads data obtained from the LOAD process. If you need to control the number of jobs sent from this CA WA CA 7 Edition Online system to a particular node, you can use the VRM Resource Count function, but you must implement the function manually.
VRM Device Control provides a way to control job submission based on the availability of devices that are detected during the CA WA CA 7 Edition Database Load process. With this option, CA WA CA 7 Edition defines VRM Resource Count Resources that correspond to real devices used by the job. RM.7 can then be used to set the quantities of available units.
A VRM device is defined using a device code and unit name combination. The Database Load process extracts the device code and/or unit name from each DD statement in the job. Entries in the SASSDTAB table are used to determine which device code/unit name combinations are eligible to be treated as VRM devices. The load process then defines a VRM resource count resource for each unique device code/unit name combination that is allowed by SASSDTAB.
Each entry in SASSDTAB contains information about a device code/unit name combination and the name of a group to which the device belongs. This name is chosen at the discretion of the client and allows definition of resource pools. When the job is submitted, the name of each VRM device is changed to reflect the resource groupings defined in SASSDTAB. Thus, although VRM devices are defined at the device level, they are monitored and controlled at the group level based upon the definitions in SASSDTAB.
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