Updating a QIC Device Class

To update a device class, first complete the following fields and then click Finish, or click Cancel to end the task. Existing values are displayed.

Recording Format

Select the recording format to be used when writing data to quarter-inch cartridge (QIC) media.

Note: 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. The server selects the highest format that can be supported by the drive on which a volume is mounted.

Avoid specifying the DRIVE value when a mixture of devices 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.

QIC120 26.0MB to 172.0MB 120 QIC format, depending on media

Using DC600XTD, DC6150, DC6320, and DC6525

QIC150 31.0MB to 207.0MB 150 QIC format, depending on media

Using DC600XTD, DC6150, DC6320, and DC6525

QIC525 65.0MB to 427.0MB 525 QIC format, depending on media

Using DC6320 and DC6525

QIC1000 169.0MB to 1.1GB 1000 QIC format, depending on media

Using DC9100 and DC9120XL

QIC2GB 2.0GB Uncompressed 2000 QIC format

Using DC9100 and DC9120XL

QIC2GBC See note above.

4.0GB

Compressed 2000 QIC format
QIC4GB 4.0GB Uncompressed 4000 QIC format
QIC4GBC See note above.

8.0GB

Compressed 4000 QIC format
QIC12GB 12.0GB Uncompressed 12000 QIC format, using 343-meter tape
QIC12GBC See note above.

24.0GB

Compressed 12000 QIC format, using 343-meter tape
QIC5010 13.0GB to 16.0GB Uncompressed 5010 QIC format, depending on media
QIC5010C See note above.

26.0GB to 32.0GB

Compressed 5010 QIC format, depending on media
QIC20GB 20.0GB Uncompressed 20000 QIC format
QIC20GBC See note above

40.0GB

Compressed 20000 QIC format
QIC25GB 25.0GB Uncompressed 25000 QIC format
QIC25GBC See note above.

50.0GB

Compressed 25000 QIC format
QIC30GB 30.0GB Uncompressed 30000 QIC format
QIC30GBC See note above

60.0GB

Compressed 30000 QIC format
QIC50GB 50.0GB Uncompressed 50GB QIC format, specific to the Tandberg SLR100 drive
QIC50GBC See note

100.0GB

Compressed 50GBC QIC format, specific to the Tandberg SLR100 drive

Library Name

Select the library name that contains the QIC tape drives used by this device class.

Mount Limit

Enter the maximum number of volumes that can be simultaneously mounted for the device class.

The following are possible values:

Drives Specifies that the server determines the mount limit based on the number of drives defined and online in the library.
number Specifies 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.

For external libraries, specify the number of drives for the library.

0 The value of zero prevents new transactions from gaining access to the storage pool.

Mount Retention Period

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

Tape Volume Prefix

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

Example: AB.CD2.E

Estimated Capacity

Enter the estimated capacity for the volumes categorized by 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 one of these units:

K Kilobyte
M Megabyte
G Gigabyte

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

Mount Wait Period

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