User groups and associated built-in roles are defined in
Device Manager - Storage Navigator. A user belongs to one or more user groups. Privileges allowed to a particular user are determined by the user group or groups to which the user belongs.
The Security Administrator assigns resource groups to user groups. A user group might already be configured, or a new user group might be required for certain resources.
You can divide a provisioned storage system into resource groups that allow you to manage the storage system as multiple virtual private storage systems. Configuring resource groups involves creating resource groups, moving storage system resources into the resource groups, and assigning resource groups to user groups.