To convert data sets by data movement, use the DFSMSdss COPY or DUMP/RESTORE command. When moving data sets from non-SMS-managed volumes to SMS-managed volumes, DFSMSdss invokes ACS, which may assign class names to the data sets. Alternatively, you can specify the BYPASSACS and STORCLAS keywords with the COPY or RESTORE command to force the data sets to be SMS-managed.

When moving data sets out of SMS management, specify the BYPASSACS and NULLSTORCLAS keywords with the COPY or RESTORE command. DFSMSdss then bypasses ACS and drops the data set’s class names. ACS can also make data sets non-SMS-managed.

Related reading: For more information about converting data sets, see Converting data to and from SMS management.