Specify a system-managed tape library name for a volume by using the DFSMSrmm ISPF dialog or the RMM ADDVOLUME or RMM CHANGEVOLUME subcommand with the LOCATION operand. Figure 1 shows how to use the ADDVOLUME subcommand to specify the name of an automated tape library, ATL1, where volume A00001 resides:

RMM ADDVOLUME A00001 LOCATION(ATL1) STATUS(VOLCAT)

You can provide the library name even if the volume does not yet reside in a system-managed tape library. When you provide a library name, DFSMSrmm checks if the library name is already defined in the TCDB. If the library name is defined in the TCDB, processing continues. If the library name is not defined, then processing fails.

DFSMSrmm records the library name and the library type; manual tape library or automated tape library. DFSMSrmm also records whether the volume is currently in the library.

If the volume is not defined in the TCDB, and the library name specified is an automated tape library, then DFSMSrmm sets the volume destination to the library name and waits for the volume to be entered. If the volume is not defined in the TCDB, and the library name specified is a manual tape library, then DFSMSrmm uses manual cartridge entry processing so the TCDB is updated for the volume.