Install the CA Disk Supervisor Call (SVC) so that the CA Disk management tasks do not cause data sets to appear as used.
Business Value:
Using the CA Disk SVC will improve CA Disk processes by differentiating those data sets opened for management functions from those opened by applications. The CA Disk SVC minimizes the amount of time required to run storage management processes based on last-used criteria by allowing them to target the correct set of data.
Additional Considerations:
The CA Disk storage management tasks open data sets to perform management functions such as backup, migration, compression, and so on. Whenever management functions are run, IBM's SU 60 open Operating System Interface marks these data sets as used. Therefore, the other functions such as archive will be prevented from finding and processing data sets that are truly inactive.
This action can cause many data sets to appear to be in use and are kept on disk merely due to storage management jobs routinely being run. The CA Disk SVC exempts the management jobs from causing these updates.
More Information:
See the section The CA Disk SVC in the Chapter "Customization" in the Installation Guide.
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