Gathering Statistics for Data Sets with Non-Specific Retention

The CTTSTK utility gathers additional statistical information for data sets with non-specific retention (meaning, retention types CYCLES, CATALOG and LAST ACCESS). The average life span of a scratched data set with non-specific retention is calculated by the utility and saved in the Stacking database. This information is calculated only for data sets that were scratched during execution of the CTTRTM utility. The average life span is not calculated for data sets that are manually scratched (meaning, scratched by using option E in the TI screen).

For information about how a data set’s average life span is used by the Dynamic Stacking facility, see the topic that discusses stacking data sets with non-specific retention in the organization and administration chapter of the Control-M/Tape User Guide.