4. FILES › 5.2 VTS Component Files › 5.2.3 VTS Component SVT Information Area Files › 5.2.3.7 Virtual Tape Volume Migrate Request File › 5.2.3.7.3 SVTVGR Usage Considerations

5.2.3.7.3 SVTVGR Usage Considerations

The SVTVGR file, as well as the Virtual Tape Volume Recall
Activity (SVTVRR) file contain data useful for hourly trend
analysis.

In some cases, migrations occur immediately after VTV is
created.  In other cases, policies delay migration until
certain criteria are met.  For example, delaying migrations
during peak batch activity times or until the disk buffer
approaches full capacity.