Template switching

Template switching is most commonly used to direct small data sets to disk and large data sets to tape, but it can also be used to switch to templates that differ in DSNs or in HSN classes. The decision to switch is made based on the estimated output data set size, which may differ from the actual final size of the output data set. This difference is particularly true for incremental image copies that are estimated at 10% of the space required for a full image copy.