Disk Backup and Restore - MVSDISK BACKUP AND RESTORE- ADD-ON OPTIODISK BACKUP AND RESTORE
Issue/Introduction
How do I perform a RESTORE from copy tapes during a Disaster Recovery?
Resolution
You must set SYSPARM RESCOPYTY. Specifying this SYSPARM with a Y will instruct Disk to use the duplicate copy tapes for all data set restores, including volume recovery.