When the target volume is type *BACKUP, the Copy Optical (CPYOPT)
command has the following requirements:
- The source volume must be type *PRIMARY. 94 Optical Support V5R3
- Only the CPYOPT and CVTOPTBKU commands can write to the target *BACKUP
volume. APIs, utilities, and user programs cannot write to an optical *BACKUP
volume.
- An optical *BACKUP volume can contain information for only one optical
*PRIMARY volume. This prevents two primary volumes from sharing the same optical
backup volume.
- You cannot delete directories or files from an optical *BACKUP volume.
This ensures data integrity of the optical backup volume.
- The system maintains the file create date and time, and change date and
time for the *PRIMARY volume on the optical *BACKUP volume.
- A user application cannot directly use a file or directory on a *BACKUP
volume. First, you must copy the file or directory to an optical *PRIMARY
volume by using CPYOPT.
- If the optical *PRIMARY volume is damaged or lost, you can convert the
optical *BACKUP volume to an optical *PRIMARY volume. You can do this by using
the Convert Optical Backup (CVTOPTBKU) CL command.
- To maintain control information about the status of backup requests, optical
*BACKUP volumes require additional media usage. Because of this, a *PRIMARY
volume that is 100% used may not fit on an optical *BACKUP volume.
- The system always initializes *BACKUP volumes with a 99% volume threshold.