If this field is left blank, the DNS server address is populated by Dynamic Host Configuration Protocol (DHCP). 

The address values can be in IPv4 or IPv6 format. A maximum of three DNS servers can be added. Any spaces that are entered in this field are removed. 

To submit changes, click Submit . If the user changes apply to the accessing cluster, a warning message is displayed that indicates that the current user access will be interrupted. To accept changes to the accessing cluster, click OK . To reject changes to the accessing cluster and return to the IP addresses tab, click Cancel . 

To reject the changes that are made to the IP addresses fields and reinstate the last submitted values, select Reset . The user can also refresh the window to reinstate the last submitted values for each field. 

The Encrypt Grid Communication tab is no longer visible in the GUI TS7700 MI if the IPSec grid communication encryption is disabled in all clusters of the grid. Use the Secure Data Transfer option instead. 

Important:  Secure Data Transfer has no significant effect on the performance of the TS7700 when enabled. Secure Data Transfer requires FC 5281 installed. 

## Feature licenses 

The user can view information about feature licenses, or activate or remove feature licenses from the TS7700 cluster from this TS7700 MI page. 

The Feature Licenses window includes the following fields: 

GLYPH<SM590000> Cluster common resources: The Cluster common resources table displays a summary of resources that are affected by activated features. The following information is displayed: 

– Cluster-Wide Disk Cache Enabled: The amount of disk cache that is enabled for the entire cluster, in terabytes (TB). If the selected cluster does not possess a physical library, the value in this field displays the total amount of cache that is installed on the cluster. Access to cache by a cluster without a physical library is not controlled by feature codes. 

– Cross-Cluster Communication (Grid): Whether cross-cluster communication is enabled on the grid. If this option is enabled, multiple clusters can form a grid. The possible values are Enabled and Disabled. 

– Peak data throughput: The Peak data throughput table displays for each vNode the peak data throughput in megabytes per second (MBps). The following information is displayed: 

GLYPH<129> vNode: Name of the vNode. 

GLYPH<129> Peak data throughput: The upper limit of the data transfer speed between the vNode and the host, which is displayed in MBps. 

GLYPH<SM590000> Currently activated feature licenses: The Currently activated feature licenses table displays a summary of features that are installed on each cluster: 

– Feature Code: The feature code number of the installed feature. 

– Feature Description: A description of the feature that was installed by the feature license. 

– License Key: The 32-character license key for the feature. 

– Node: The name and type of the node on which the feature is installed. 

