To define a device class, first complete the following fields and then click Finish, or click Cancel to end the task.
Use this device type for LAN-free configurations. Configurations that are
not LAN-free and use StorageTek devices use the 3590 device type.
Enter the name of the device class to be defined. The maximum length of the device class name is 30 characters.
Select an option. You must specify the exact drive type in the FORMAT parameter. This drive type corresponds to the drives used by the storage agent in an external library configuration.
Notes:
Format | Description |
DRIVE | 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. |
9840 | Standard recording format with 270 meters (885 feet) of tape |
9840-C | LZ-1 Enhanced (4:1) compacted recording format with 270 meters (885 feet) of tape |
9940 | Uncompressed (standard) format using a 60GB cartridge |
9940B | Uncompressed (standard) format using a 200GB cartridge |
9940-C | Compressed format using a 60GB cartridge |
9940B-C | Compressed format using a 200GB cartridge |
T9840C | Uncompressed (standard) format using a 40GB cartridge |
T9840C-C | Compressed format using a 80GB cartridge |
Select the name of the defined library object that contains the ECartridge Tape drives used by this device class.
Enter the maximum number of volumes that can be simultaneously mounted for the device class.
The following are possible values:
number | The maximum number
of drives used concurrently. This value can be any number from 0 to 256.
This value must not be allowed to exceed the number of drives defined and online in the library. |
0 | The value of zero prevents new transactions from gaining access to the storage pool. |
Enter a number for the maximum length of time, in minutes, to wait for a volume to be mounted.
Enter a number, in minutes, for the maximum amount of time to retain an idle volume before dismounting it. This parameter is optional.
Enter the high level qualifier of the file name that the server writes into the sequential access media labels. This parameter is optional. For each sequential access volume assigned to this device class, the server uses this parameter to create the data set name.
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 |
Enter the estimated capacity for the volumes assigned to this device class. This parameter is optional. The default estimated capacity is 9GB.
You can specify this parameter if the default estimated capacity for the device class is inaccurate due to compression of data.
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 Recording Format heading.
Enter the expiration date that is placed on the tape labels for this device class, which are used for allocation. This parameter is optional. Enter the value as shown:
yyyyddd | Specifies the expiration date for this device class in YYYYDDD format. For example, 2004007 signifies that expiration occurs on the seventh day of year 2004, or January 7, 2004. |
Enter an integer between 1-9999 that defines the length of time, in days, to retain the tape. This parameter is optional.
Specify whether RACF, if installed, protects volumes assigned to this device class. If protection is provided, RACF profiles are created for the volumes. This parameter is optional.
Possible values for Protection:
No | Specifies that RACF does not protect cartridge volumes assigned to this device class. The default is No. |
Yes | Specifies that RACF protects cartridge volumes assigned to this device class. RACF profiles are created for volumes when the server first uses the volumes, but profiles are not deleted when volumes are deleted from the server. Profiles will have to be manually deleted. |
Automatic | Specifies that RACF protects cartridge
volumes assigned to this device class. RACF profiles are
deleted when volumes are deleted from the server. If you specify automatic, volumes deleted from the server will no longer be RACF-protected and the data on these volumes will be accessible by other users. |
Enter an esoteric unit name, up to 8 characters, to specify a group of tape devices that support ECartridge media. This parameter is optional. The default is 9840. Use the unit name that represents the subset of drives that are attached to z/OS in the library.