Hitachi VSP G200 System Administration Manual page 264

Use NAS Manager to install and enable both block and file license keys on
VSP Gx00 models with NAS modules. Using NAS Manager, you can install
both block and file licenses but only remove file licenses. To remove block
licenses, you must use the maintenance utility.
Caution: If you use Dynamic Provisioning, the licensed capacity might
become insufficient because the used capacity of Dynamic Provisioning pools
could increase even if you do not add any volumes. If this occurs, you must
purchase an additional license within 30 days to cover the capacity shortage.
For details on how to calculate pool capacity, see the Provisioning Guide.
Caution: When you remove Data Retention Utility an error might occur even
if the Permitted Volumes column of the License Keys window indicates that
the licensed capacity is 0 TB.
Related tasks
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Related references
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264
System Administrator Guide for VSP Gx00 models and VSP Fx00 models
Enabling a license on page 266
Disabling a license on page 267
Removing a software license
Examples of license information
Managing license keys
on page 267
on page 268