Defining a File Device Class

To define a device class, first complete the following fields and then click Finish, or click Cancel to end the task.

Device Class Name

Enter the name of the device class to be defined. The maximum length of the device class name is 30 characters.

Mount Limit

Enter the maximum number of file volumes that can be simultaneously mounted for the device class.

Volume Prefix

Enter the high-level qualifier of the data set name that is used to allocate scratch volume data sets. For all scratch file volumes created in this device
class, the server uses this prefix to create the data set name. This field is optional. The default is ADSM. 

Maximum Capacity

Enter the maximum capacity for the volumes categorized by this device class. The default is 1M.

The value must be an integer followed by one of these units:

K Kilobyte
M Megabyte
G Gigabyte

Unit

Enter the unit name that indicates on which device (or devices) to place File volumes. You can specify any unit name that is known to your MVS installation. The maximum length of the unit name is 8 characters. The default is a null string using single quotes (''). This parameter is optional.

Volser

Enter the volume serial number of a DASD on which to place File volumes. The volser can be any volume serial number known to your MVS installation. The maximum length of the volser is 6 characters. The default is a null string using single quotes (''). This parameter is optional.