REORGadon (HSM/R) 2.0 is a tool to address the problems and restrictions associated with batch reorganization of IBM's Hierarchical Storage Manager (DFSMShsm) control data sets (CDS) and small data set packing data sets (SDSP). REORGadon provides HSM control data set or SDSP reorganization while the files are active and online to HSM, and without having to shutdown and restart HSM.