DFSMSdss can perform either logical or physical processing. If you perform a logical dump on a data set, DFSMSdss restores it logically; if you perform a physical dump, DFSMSdss restores it physically. Logical processing operates against data sets independent of physical device format. Physical processing moves data at the track-image level and operates against volumes, tracks, and data sets. Each type of processing offers different capabilities and advantages.