Choosing VOLSERs for Linux volumes

In a z/OS® environment, DASD is divided into logical units known as volumes. You can define a volume to any size, up to a maximum size supported by z/OS environment.

Volumes are further divided into fixed-size tracks. The device's geometry determines the size of the track. Linux supports both the 3380 and 3390 track geometries. You can reference a volume by using a 16-bit device number, and a six-character volume serial number (known as the volser).

When choosing a volser for a volume, follow these rules:

The volser is six characters long. z/OS accepts fewer than six characters for the volser, but Linux requires that volumes have a six character volser.
The volser uses uppercase, alphanumeric characters (A-Z, 0-9), and special characters ($, #, @).