SMS and RELEASE

CA Disk uses the Management Class and Storage Class attributes to determine the data set eligibility for Idle Space Release. External Idle Space Release processing remains unchanged. Internally it determines when it is running in an SMS environment and uses the Management Class and Storage Group information to make its decisions.

The SMS fields that CA Disk supports are as follows:

Partial Release (MC) This optional field can be defined Y, YI, N, C, and CI for VSAM and non-VSAM data sets. The default is N. When this field is defined Y or YI, the data set is eligible for idle space release.
When this field is defined C or CI with a non-zero secondary space allocation, it is eligible for idle space release. When this field is defined N, it is not eligible.
Auto Migrate (SG). You can define this required field as YES, NO, INTERVAL, or PRIMARY. When this field is defined as YES, INTERVAL, or PRIMARY, the data set is eligible for idle space release. When this field is defined NO, it is not eligible.