Location of the source and target ICF catalogs

When the replication or split occurs, IMS Cloning Tool requires source ICF catalog information for the source volume data sets that are being cloned at the point-in-time.

This requirement enables the renaming of the target volume data sets. Information, such as the VSAM sphere and GDG Base information, is only in the ICF catalogs (not on the DASD being cloned). Therefore, this information must be captured at the point-in-time. Two options are available:

The source ICF catalogs can reside on the source volumes that are being cloned and can be read from the target volumes.
The source ICF catalogs can reside on non-source volumes. They can be read from the live source ICF catalogs at the time the replication or split occurs.

The target ICF catalogs that are used to catalog the renamed data sets cannot reside on a target volume from the time that volume copy occurs through the completion of the RENAME step. If desired, you can move the target ICF catalogs from the target volume before the volume copy, and later move the target ICF catalogs back to the target volume after the RENAME completes.