Multivolume and Single File

              ┌────────────────────────────┐
VOLUME 1      │          A.B.C (1)         │
              └────────────────────────────┘
 
              ┌────────────────────────────┐
VOLUME 2      │          A.B.C (2)         │
              └────────────────────────────┘

A multivolume, single-file data set is one data set that spans two or more volumes. None of these volumes is shared with other data sets.