If your TSO data is currently pooled and you are satisfied with the overall performance of the TSO workload, you can convert the volumes in-place using DFSMSdss CONVERTV. The CONVERTV command processes volumes and evaluates the eligibility of the volumes and the data sets on the volume to be system-managed. If the volume and data sets are eligible for system management, your storage class and management class ACS routines are run to assign storage classes and management classes to all the data sets on the volume. Figure 1 shows a sample CONVERTV operation.

    //CONVV  EXEC  PGM=ADRDSSU,REGION=4096K
   //*--------------------------------------------*
   //* JOB : DSS CONVERTV                         *
   //* NOTE: Sample DSS Job to Convert TSO        *
   //*       data in place                        *
   //*--------------------------------------------*
   //SYSPRINT  DD  SYSOUT=*
   //D65DM1   DD    VOL=SER=D65DM1,UNIT=3390,DISP=SHR
   //SYSIN    DD    *

    CONVERTV                                  -
        SMS                                   -
        DDNAME(D65DM1)