30 (SMB)
Administrator can set installed RAS and update server in the same server. All users will connect to the Server update. If there are some mobile users, administrator can set dual update, if user cannot via update server update, it will via internet to update.
300(Enterprise)
Administrator can set 2 update server and 1 RAS; user can set different updater server let user update and monitor the user for one server. If there are some mobile users, administrator can set dual update, if user cannot via update server update, it will via internet to update.
3000(Corporate)
Star protocol
Ras and Update installed in other place to let user connect and update the version/definition. All Ras will replication To Main RAS server to let Administrator to monitor all Users. If there are some mobile users, administrator can set dual update, if user cannot via update server update, it will via internet to update.