Tape volume types

You can use four types of tape volumes to store objects:

A group volume that is associated with an Object storage group
A backup volume that is associated with an Object Backup storage group
An MVS scratch volume that, when added dynamically, appears as belonging to an Object or Object Backup storage group when another volume is needed by OAM to satisfy a request
An OAM scratch volume that is associated with the *SCRTCH* Object storage group. It is available to be used by any Object or Object Backup storage group that uses the same unit name and data class as this volume.