After the PreStore process is completed, and if the system is configured to work with the mirroring feature, the Clone process creates a second copy of the stored images on a different media volume.
NOTE: The Clone process is automatically generated after the PreStore process has been terminated.
When the Clone process takes place, both drives are used for duplicating the images. When only two drives exist in the library, Fetch requests generated during the Clone process remain pending until the mirror process is complete. For this reason, it is recommended to have more than two drives, to enable other operations to be executed in parallel to the Clone process.
The Clone process can be performed either automatically by the system or manually by the system administrator. The manual Clone option should be used when a Clone has not been created automatically. Refer to the NetBackup Administrator Guide for information about performing a manual Clone.
NOTE: When the cartridge is full, it is recommended to switch it to the write protected state.