Defining an Optical or WORM 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.

Device Type

Select the Optical or WORM device type to be assigned to the device class.

Optical Specifies that the device class uses two-sided 5.25 inch rewritable optical media. The default is Optical.
WORM Specifies that the device class uses two-sided 5.25 inch write-once read-many (WORM) optical media.

Recording Format

Select the recording format to be used when writing data to media.

Drive Specifies that ADSM selects the highest format that can be supported by the drive on which a volume is mounted. The default is Drive.
650MB Specifies that ADSM writes data to a 650 MB 5.25-inch optical drive.
1300MB Specifies that ADSM writes data to a 1300 MB 5.25-inch optical drive.
2600MB Specifies that ADSM writes data to a 2600 MB 5.25-inch optical drive.

Library Name

Select the name of the library that contains the optical drives used by this device class.

Mount Limit

Enter the maximum number of volumes that can be simultaneously mounted for the device class. This value can be any number from 0 to 256.

Possible values for this parameter:

Drives Specifies that ADSM determines the mount limit based on the number of drives defined and online in the library. The default is Drives. For external libraries you should not use the value of Drives. You need to specify the number of drives for the library as the Mountlimit value.
mount limitvalue Specify a number for the maximum number of drives used concurrently in this device class by ADSM. This value must never be allowed to exceed the number of drives that are defined and online in the library that services this device class.
0 The value of zero prevents new transactions from gaining access to the storage pool.

Mount Retention

Enter the amount of time, in minutes, to retain an idle volume before dismounting it.

Estimated Capacity

Enter the estimated capacity for the volumes assigned to this device class. You do not need to specify an estimated capacity unless the drives perform data compression, or you have volumes of nonstandard size. The value must be an integer followed by a scale factor.

Scale factors and their meanings are:

K Kilobyte
M Megabyte
G Gigabyte

Mount Wait

Enter the maximum length of time, in minutes, to wait for a volume to be mounted in a manual library.