Use the format:
https://<appliance-IP-address>:8080 to access the management GUI.
To manage backup/restore:
Log in to vCenter (Flex or HTML5 client), then click (Flex home) or Menu (HTML5) in the toolbar, and then select SnapCenter Plug-in for VMware vSphere.
Quick start guide:
https://library.netapp.com/ecm/ecm_download_file/ECMLP2863450