6 Configuring Capacity

Note:

Capacity is automatically applied in a partitioned library. You can only configure capacity in a non-partitioned library.

In a non-partitioned library, active capacity is automatically assigned after installing the hardware activation file. The automatic configuration activates storage slots in the order specified by the Default Capacity Policy. However, you can customize the configuration and select which slots will be activated.

• Creating a Custom Capacity Configuration

• Resetting the Capacity Configuration

• Setting the Default Capacity Policy

• Displaying the Current Capacity Configuration

• Resolving Orphaned Cartridges Caused by Capacity Changes

See Also

• "Updating Hosts After Modifying Capacity"

Creating a Custom Capacity Configuration

You cannot use the local operator panel to configure capacity.

Note:

You can click Refresh to discard uncommitted changes and restore the last saved configuration. You must apply the configuration to save it to the library controller.

1. To prevent conflicts, coordinate with other library users before configuring the library.

2. In SLC, select Tools > Select Active Cells. Select the Module Map tab.

3. Select a module and click the Select Active Cells tab. To display an adjacent module, click Move Left or Move Right.

   Note:

   If you are customizing capacity for the first time, you must deselect all storage slots:

   1. In the Select by drop-down list, choose Library. Then, select the Remove option.

   2. Click any "Selected" slot on the module map to make all slots "Inactive".

4. In the Select by drop-down list, select a range. Then, select Add (to enable the area for activation) or Remove (to deactivate the area).

5. Using the library map, click the storage slots you want to activate or deactivate.

6. When you have completed the configuration, click Apply User Design.

   Caution:

   If there are warnings, DO NOT commit the changes. Click Details >>, and then perform recovery moves on the orphaned cartridges (see "Moving Cartridges (Recovery Moves)").

7. Reconfigure library host applications to recognize the changes (see your host software documentation and "Updating Hosts After Modifying Capacity").

Capacity Icons

SLC Icon	Description
	Not Accessible — slot not available for activation (reserved for diagnostic cartridges, physically blocked, and so on).
	Inactive — slot not yet licensed for use
	Active — slot licensed for use
	Selected — slot designated for activation or deactivation
	No activation needed — resource is active by default

Resetting the Capacity Configuration

Caution:

Resetting the configuration removes all custom capacity activation, partitioning, media validation pools, and resets all SCSI element IDs in a SCSI library.

Resetting the capacity applies the default capacity as defined by the default capacity policy (see "Setting the Default Capacity Policy").

1. To prevent conflicts, coordinate with other library users before configuring the library.

2. In SLC, select Tools > Select Active Cells. Select the Module Map tab.

3. Select any module in the library. Click the Select Active Cells tab.

4. Click Reset to Default.

5. Reconfigure library host applications to recognize the changes (see your host software documentation and "Updating Hosts After Modifying Capacity").

Setting the Default Capacity Policy

Note:

This setting only defines the assignment order for new capacity added in a non-partitioned library. After changing the policy setting, you can follow "Resetting the Capacity Configuration" to remove the existing capacity and re-assign it following the new setting.

1. In SLC, select Tools > Configuration.

2. Click the Default Capacity Policy tab.

3. Select the type of capacity assignment for the library:

   • Left to Right (default) — capacity assignment begins in upper left slot on the rear wall of the left-most module, moves right, then crosses over to the upper left slot on the front wall of the left-most module (see Figure E-6).

   • Center Out — capacity assignment begins nearest to the drives and is split evenly between the left/right and front/back.

4. Click Apply.

Displaying the Current Capacity Configuration

1. In SLC, select Tools > Select Active Cells. Select the Module Map tab.

2. Select the module you want to display.

3. Select the Current Active Cells tab. Hover over a slot or drive to display detailed information.

Resolving Orphaned Cartridges Caused by Capacity Changes

In a non-partitioned library, an orphaned cartridge is located in an inactive storage slot and is inaccessible to all hosts. A cartridge can become orphaned when you reduce active storage capacity or manually move a cartridge to an inaccessible slot.

To resolve orphaned cartridges, you can:

• Generate a report of orphaned cartridges (see "Viewing Active Capacity Reports")

• Audit the library (see "Auditing the Library")

• Perform a recovery move on a cartridge (see "Moving Cartridges (Recovery Moves)")

For partitioned libraries, see "Resolving Orphaned Cartridges Caused by Partitioning Changes".