Confirming global volume movement

Vital record processing determines the volume movements required and storage location management processing assigns the volume destinations. You must ensure that volume movements are completed and confirmed to DFSMSrmm.

You use the RMM subcommands and DFSMSrmm ISPF dialog to confirm that volume movements have taken place. You use the RMM CHANGEVOLUME * CONFIRMMOVE subcommand to change the status of a volume move from PENDING to CONFIRMED. You can perform confirmation for a single volume or for multiple volumes. Performing confirmation for multiple volumes is called global confirmation. In DFSMSrmm, confirmation means to issue a command to notify DFSMSrmm that a volume has moved to a location or that a release action defined for a volume has been completed. If you perform confirmation for a single volume, DFSMSrmm processes the confirmation immediately. If you issue a request for a global confirmation, DFSMSrmm processes the global confirmation during inventory management processing.

Global move confirmation is performed as part of DFSMSrmm inventory management. DFSMSrmm performs move confirmation for a volume, prior to making any other updates to a volume, as part of these inventory management functions:

Vital record processing
Storage location management processing
Expiration processing. Only if all volumes are processed.

If a volume move is outstanding, and it has been globally confirmed, DFSMSrmm performs confirmation of the move for that volume. DFSMSrmm confirms moves in progress prior to starting any new moves that might be set by the current inventory management run. If each of the inventory management functions is in a separate job step, then global move confirmation is performed once for each step. If the inventory management functions are run in a single job step, DFSMSrmm performs global move confirmation once.

The timing of the inventory management runs is very important. Here are some things to consider:

If you requested global move confirmation and want to change it, you can undo the request prior to the next run of inventory management. You can use the RMM CHANGEVOLUME subcommand to undo global confirmation of volume moves. After the next run of inventory management, DFSMSrmm will have confirmed the volume moves making undoing the confirmation of the moves difficult.
When you request an extract data set to be used for generating movement or inventory reports, consider the timing of inventory management functions. An extract data set produced after a run of vital record processing and storage location management processing, contains the information of new volume movement for movement reports. An extract data set produced after a global confirm move and a run of any of the listed inventory management functions, contains information about volumes after moves have been confirmed.
To make scratch volumes available after a move and when you use global move confirmation, make sure you run expiration processing to complete the global move confirmation and return the moved volumes to scratch status.