Concepts and Facilities › Data Compression Algorithms › System Operating Defaults

System Operating Defaults

Many of the system defaults allow the system to proceed through a number of operations based on preset user responses. We mention some here, but see the chapter Maintenance and Administration in this guide for more details.

You can modify various system operating defaults to establish a pattern of operating characteristics or personality for the IUI, such as with AUTO-IMPLEMENT. AUTO-IMPLEMENT selects the algorithm achieving the best compression results unless you have set the ALGORITHM SELECTION BIAS to SPEED which forces the Super Express algorithm to be selected during AUTO-IMPLEMENT. In any event, AUTO-IMPLEMENT is not enabled unless the selected algorithm has achieved at least the value specified for
AUTO-THRESHOLD.

You can set up the IMPLEMENTATION MODE to SCHEDULED. This automatically proceeds with the scheduled implementation after you have selected the compression algorithm for a data set and executed the implementation process.

Note: Setting the IMPLEMENTATION MODE to CHOICE, the system will always ask which implementation mode to use as each data set proceeds through implementation.