Defining a Cartridge 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 tape volumes that can be simultaneously mounted for the device class.

Mount Wait Period

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

Mount Retention Period

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

Tape Volume Prefix

Enter the high level qualifier of the file name that the server writes into the tape labels. For each sequential access volume assigned to this device class, the server uses this prefix to create the file name.

Example: AB.CD2.E

Maximum Capacity

Enter the maximum amount of data the server can store in the volumes categorized by this device class. This parameter is optional. The default is 0.

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

K Kilobyte
M Megabyte
G Gigabyte

Estimated Capacity

Enter the estimated capacity for the volumes categorized by this device class.

If a value other than 0 was specified for the Maximum Capacity, this value is ignored.

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

K Kilobyte
M Megabyte
G Gigabyte

For more information on the default estimated capacity, see the Format heading.

Expiration

Enter the expiration date that is placed on the tape labels for this device class, which are used for allocation. This parameter is optional. The default is 99365. Possible values are:

yyddd Specifies the expiration date for this device class in YYDDD format.
yyyyddd Specifies the expiration date for this device class in YYYYDDD format.

Format

Enter the tape format. This parameter is optional. The default is DRIVE.

If you specify the 3490B or 3490C tape format, you can use the Length parameter to specify the length of the CARTRIDGE tape.

Possible values are:

Format Estimated Capacity Description
DRIVE Not applicable Specifies that the server selects the highest format that can be supported by the tape drive.
3480 180MB 18-track basic recording format
3480XF 180MB 18-track compressed recording format
3490 Base 180MB 18-track basic or compressed recording format (CST)
3490B See note

360MB

720MB

36-track

Uncompressed (basic) recording format (CST)

Compressed recording format (ECCST)

3490C See note

360MB

720MB

36-track

Uncompressed (basic) recording format (CST)

Compressed recording format (ECCST)

Note The actual capacities may vary depending on which cartridges and drives are used.

The 3490 Base devices include Models A01, A02, A10, A20, B02, B04, B20, B40, D41, and D42.

Length

Enter the media type that identifies the length of the tape used for 3490 Basic and 3490 Compacted recording format. This parameter is optional. The default value is ANY.

Use this parameter in conjunction with the Format parameter to specify the length for Cartridge tape devices with the 3490B or 3490C tape formats (36 track).

Possible values are:

ANY Specifies that the system uses the type of media that is available.
CST Specifies that only Cartridge System Tapes are allowed.
ECCST Specifies that only Enhanced Capacity Cartridge System Tapes are allowed.

Display

Enter what you want shown on the tape drive display. This parameter is optional. The default value is ALTERNATE.

Possible values are:

ALTERNATE Specifies the tape drive to display the volume serial number (volser), alternating with "Tivoli Storage Manager" on the tape drive.
VOLSER Specifies the tape drive to display only the volume serial number (volser) of the tape on the tape drive.