During a , data is read from the and written to the in the same . Because the VolumeCopy diverts processing resources from I/O activity, it can affect I/O activity in the storage subsystem. The defines how much processing time is allocated for a VolumeCopy as compared to I/O activity.
These factors contribute to system performance:
You can select the copy priority while you are creating a new VolumeCopy, or you can change it later by using the . These copy priority rates are available:
The lowest priority rate supports I/O activity, but the VolumeCopy takes longer. The highest priority rate supports the VolumeCopy, but I/O activity might be affected.
The progress of the VolumeCopy appears in the status bar at the bottom-right of the Copy Manager. The status bar shows an estimate of the time remaining for the VolumeCopy to complete. You can view the progress of a VolumeCopy in the Copy Manager only when a VolumeCopy has a status of In Progress.