To assign or to change the assignment of shelf locations for volumes in the SHELF location or a system-managed library, use the RMM ADDVOLUME subcommand and the RMM CHANGEVOLUME subcommand with the RACK operand or the POOL operand. DFSMSrmm does not automatically initiate assignment of rack numbers as the shelf location for these volumes.

To automatically manage shelf space in a home location, use a shelf-managed storage location as the volume's home location. When a volume moves from or to a storage location, DFSMSrmm automatically assigns a bin number as the shelf location for the volume.

You can use either the rack number or the bin number as the shelf location for a volume. DFSMSrmm issues message EDG4013I at mount time when a volume is in a storage location, so that the location and bin number is available for the operator.