The Concurrent Copy support groups all candidate data sets with the BACKUPCC command into a single backup process. When you start the command, all data sets matching the selection criteria are backed up as a unit. CA Disk manages these units as synchronized backup sets.
Although the entire backup process can take hours, the DFSMS/MVS Concurrent Copy function monitors the process through its completion. This ensures that even though multiple updates to the data can occur during the backup process, the actual data being backed up is exactly the way it appeared when the INITIALIZATION COMPLETE message was issued.
If the BACKUPCC command fails at any point during its execution, or if the MVS system on which the job is running fails, you must restart the entire backup process again (see Using the Concurrent Copy Backup Support). This requirement ensures that a correct synchronized Concurrent Copy is established.
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