CERN lO下ype Categories local storage device Local Remote remote storage device end-user analysis performance baseline often given by network sync async big data analysis forward reading Sequen tial Random seek read video streaming selective data analysis bulk data analysis CERN CSC 2018 Data Technology ExercisesCSC 2018 Data Technology Exercises IO Type Categories Local Remote Sequen tial Random local storage device remote storage device performance baseline often given by network forward reading seek + read end-user analysis big data analysis video streaming selective data analysis bulk data analysis sync async