Full synchronization

All objects you are saving reach a checkpoint at the same time. The system then saves them to the media. IBM® strongly recommends that you use full synchronization, even when you are saving objects in only one library.

Full synchronization usually completes checkpoint processing in the least amount of time, and it has the least impact to your recovery procedures. Because it allocates all objects you are saving before obtaining a checkpoint image of them, it usually keep objects locked longer than other options. This option also uses the most additional storage.

To request full synchronization of the data saved within an operation, specify *SYNCLIB for the SAVACT parameter when saving library data, or specify *SYNC when saving directory data.

To request full synchronization of the data saved within multiple save operations, use the STRSAVSYNC command before starting the save operations. Because the backup data is synchronized, all of the data is saved at a single point in time and represents a consistent view of all the data. You can synchronize data from libraries and directories, a set of save library operations, or a set of save directory operations. Because there is only one synchronization checkpoint, it improves system performance for the save-while-active function.