1. From the dashboard panel select Reports and click Build Custom report. Ensure “Use all data" is checked and click next.
2. In the Add a Report View Element view expand the Hosts node and highlight All hosts. On the right side under View Styles ensure “Select a view template” is checked and click next.
3. In the Select a Template view expand the Hosts node and then expand Reporting node under that and select Resources Details – Disks.
Note: The pane on the right will be populated with the first host as an example of the view and click finish. Now when you run this report it will give you the disk details above for all your hosts. To get more specific details you will need to build a custom view with the fields that you require.