When moving data between unlike devices, you must use logical processing. If you specify DATASET with the COPY command, DFSMSdss does a logical copy operation. To copy all the data on a volume logically, you also need to specify input volumes with LOGINDDNAME, LOGINDYNAM, INDDNAME, or INDYNAM. LOGINDDNAME or LOGINDYNAM is required if you specify SELECTMULTI.