Define Device Class

Use this window to define a device class for storage pools.


Devclassname

Type the name of the device class to be defined in the Device class name field. The maximum length of the device class name is 30 characters.


Devtype

Can allow the user to specify the Optical or WORM device type to the device class.

The settings for Format are:

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

Default: Optical


Format

Can allow the user to specify the recording format to be used when writing data to sequential access media.

The settings for Format are:

Drive Specifies that ADSM selects the highest format that can be supported by the sequential access drive on which a volume is mounted.
650MB Specifies that ADSM writes data to a 650 MB 5.25-inch optical drive. This value is not valid for WORM12 device types.
1300MB Specifies that ADSM writes data to a 1300 MB 5.25-inch optical drive. This value is not valid for WORM12 device types.
2600MB Specifies that ADSM writes data to a 2600 MB 5.25-inch optical drive. This value is not valid for WORM12 device types.

Default: Drive


Library

Type the name of the defined library object that contains the optical drives used by this device class in the Library field.


Mountlimit

Type the maximum number of sequential access volumes that can be simultaneously mounted for the device class in the Mountlimit field.

Default: Drives

Considerations:

The following are possible values:

Drives Specifies that every time a mount point is allocated, the number of drives defined to the library is used to calculate the true mountlimit value, (including taking into account whether each is online).
Mountlimitvalue Specifies 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.

Mountretention

Type the amount of time, in minutes, to retain an idle sequential access volume before dismounting it in the Mount Retention field.

Default: 60

Considerations:


Estcapacity

Type the estimated capacity for the sequential access volumes categorized by this device class in the Estimate Capacity field. Specify an integer followed by a scale factor.

Scale factors and their meanings are:

K Kilobyte
M Megabyte
G Gigabyte

Mountwait

Type the maximum length of time, in minutes, to wait for a sequential access volume to be mounted in the Mount Wait field.

Default: 60

Considerations: