When allocating a specific, multi-volume tape data set, if the data set resides on multiple tape volumes that are:

• System-managed, then all volumes should reside in the same system-managed tape library and the same tape storage group. (If all of the volumes do not reside in the same tape library, the installation can enter the volumes through the DFSMS installation exit, CBRUXVNL.) These volumes must also be part of the same SMS storage group.
• Non-system-managed, then all volumes must be outside of any system-managed tape library.