Configure in this context means to configure a NetBackup media server as a storage server for deduplication.
See About deduplication servers.
When you configure a storage server for deduplication, you specify the following:
When you create the storage server, the wizard lets you create a disk pool and storage unit also.
To configure a deduplication storage server by using the wizard
In the NetBackup Administration Console, expand Media and Device Management > Configure Disk Storage Servers.
Follow the wizard screens to configure a deduplication storage server.
After NetBackup creates the deduplication storage server, you can click Next to continue to the Disk Pool Configuration Wizard.