If you have been using an automated tape library without DFSMSrmm, volume status information and retention requirements from the TCDB must be recorded in the DFSMSrmm control data set for private and scratch volumes in the automated tape library.

Assuming that you are using a single range of volume serial numbers that start with S00000 in the automated tape library, follow these steps to obtain the information:

1. Adding shelf space is optional for physical volumes and not supported for logical volumes. Define shelf space for the volumes to DFSMSrmm using the RMM ADDRACK subcommand:

   RMM ADDRACK S00000 COUNT(5000)

2. Use the RMM ADDVOLUME subcommand to define the volumes to DFSMSrmm and get the correct status information from the volume catalog. You can provide an owner on the RMM ADDVOLUME subcommand. If you do not specify the EXPDT operand, DFSMSrmm obtains the expiration date from the volume catalog. If there is no date in the volume catalog, DFSMSrmm uses the DFSMSrmm parmlib RETPD default.

   RMM ADDVOLUME S00000 COUNT(5000) STATUS(VOLCAT) OWNER(owner) -
        EXPDT(yyyy/ddd)

   If you do not provide an owner, DFSMSrmm assigns a default owner as described in z/OS DFSMSrmm Managing and Using Removable Media. If you are not using a single range of volumes in the automated tape library, issue multiple ADDVOLUME subcommand requests to define all volumes.

It is likely that while implementing DFSMSrmm with the automated tape library you are converting from an existing tape management system. If so, add this step to your overall conversion plan. Instead of using the RMM ADDVOLUME subcommand to define the volumes, use information from your existing tape management system to define the volumes to DFSMSrmm during the conversion.