Click 
to change to Modify mode.
Reserving volumes
By default, all Hitachi Device Manager - Storage Navigator users with proper permissions can make LU path settings and command device settings. If you perform the following procedure in Hitachi Device Manager - Storage Navigator, all users, including yourself, will not be allowed to make LU path settings and command device settings on the specified volume. Command Control Interface users can still make LU path settings and command device settings on the volume.
Hitachi Device Manager - Storage Navigator secondary windows must be defined for use in advance. When you select Modify from the Data Retention secondary window to disable an S-VOL, other users or programs are prevented from changing storage system settings. When you close the secondary window, Modify mode is released. For more information on Hitachi Device Manager - Storage Navigator secondary windows and Modify mode, see the System Administrator Guide.
To reserve volumes:
Perform one of following to display the Data Retention window.
For Hitachi Command Suite:
On the Resource tab, expand the Storage Systems tree. Right click the target storage system, then select Other Function.
Click Actions > Other Function > Data Retention to open the Data Retention window.
For Storage Navigator:
Click Actions > Other Function > Data Retention to open the Data Retention window.
Click to change to Modify mode.
In the Data Retention window, select an LDKC number in the LDKC list, select a group that the CU belongs in the CU Group list, then click a CU in the tree.
Select a volume where the Reserved column contains a hyphen. You may select multiple volumes.
Right-click the selected volume or volumes, then select Reserved > Set.
Click Apply to apply the setting.
To permit users to make LU path settings and command device settings on a volume, follow the steps above and select Reserved > Release. Then call the Hitachi Data Systems customer support to ask for Storage Navigator settings.