Files and volumes are defined as follows in a HiRDB system:
Typically, one file is stored on one volume (single-file, single-volume). However, a file that is too large for a single volume is divided and stored on multiple volumes (single-file, multi-volume). Conversely, multiple small files can be stored on a single volume (multi-file, single-volume) if formatting permits.
When files are added to a multi-file, single-volume, the storage of the last file may extend onto the next volume (multi-file, multi-volume).
Figure 1-3 shows the concepts of files and volumes.
Figure 1-3 Concepts of files and volumes