To define a device class, first complete the following fields and then click Finish, or click Cancel to end the task.
Enter the name of the device class to be defined. The maximum length of the device class name is 30 characters.
Select the recording format to be used when writing data to media. This parameter is required.
Note: If this format uses the tape drive hardware compression feature, depending on the effectiveness of compression, the actual capacity may be greater than the listed value.
Format | Estimated Capacity | Description |
Drive | Determined by drive capacity. | Specifies that the server selects the
highest format that can be supported by the drive on
which a volume
is mounted.
Avoid specifying DRIVE when a mixture of drives is used within the same library. For example, do not use this option for a library containing some drives that support recording formats superior to other drives. |
3570 | See note above.
5.0GB |
Uncompressed (basic) or compressed (if available) format
If you are using D/T3570-Bxx, you must use "B" media and specify FORMAT=3570. |
3570E | See note above.
5.0GB |
Uncompressed (basic) or compressed (if available) format
If you are using D/T3570-Cxx, you must use "C" media and specify FORMAT=3570E. |
Select the name of the defined library object that contains the tape drives used by this device class.
Enter the maximum number of volumes that can be simultaneously mounted for the device class.
Enter the amount of time, in minutes, to retain an idle volume before dismounting it.
Enter the high level qualifier of the file name that the server writes into the media labels. For each volume assigned to this device class, Tivoli Storage Manager uses this prefix to create the data set name.
Example: AB.CD2.E
Enter the estimated capacity for the volumes categorized by this device class. Specify an integer followed by a scale factor.
Scale factors and their meanings are:
K | Kilobyte |
M | Megabyte |
G | Gigabyte |
Enter the maximum length of time, in minutes, to wait for a volume to be mounted.