At the Work with Backup Control Groups display, type Option 8 (Change attributes) in front of the control group you want to work with, and press Enter. In cases when saving large amounts of small data, parallel support is not the ideal choice and may negatively impact save performance.To use parallel support to process an existing control group, you should follow these steps:1. Use parallel support when you want to reduce your backup window for large libraries and objects, large directories and files, large spooled files, or large numbers of these objects. You should, if possible, use concurrent backups to reduce backup windows for objects which can only be saved using serial mode such as system data, security data, configuration data, or folders and documents. When to Use Parallel and Concurrent SavesDue to i5/OS restrictions, you can gain the greatest benefit by designing a strategy that combines concurrent and parallel backup support.
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