The CONVERTV command is used to convert existing volumes to and from SMS management without data movement. The CONVERTV command performs three functions:

• Locks volumes that are ready for conversion to prevent new data set allocations (PREPARE keyword).
• Examines volumes identified by SMS to determine if they can be converted to SMS management (TEST keyword). No conversion is actually performed, but DFSMSdss identif any data sets that cannot be converted to SMS management and why they cannot be converted.
• Performs conversion of volumes into or out of SMS management. Any conditions that prevent conversion are identified.