See the IBM Redbook DFSMSrmm Primer, SG24-5983, for information about converting from other products to DFSMSrmm.

1. When you have existing information about your media library, you can build a set of RMM TSO subcommands, one for each volume, and define the information you know. You can also write a REXX exec, CLIST or procedure that converts volume information from your existing tape management system into DFSMSrmm subcommand requests.
2. After adding the information you have available, set the DFSMSrmm running mode to protect mode. Protect mode is the only mode that provides full verification and validation of volumes.