Although not widely used, the Proxmox GUI has the following four cluster view modes:
The Server View
The Folder View
The Storage View
The Pool View
Each view serves a specific purpose and can be used whenever necessary. Knowing what these views are and when to use them can be very helpful in a large cluster. For a small or home-based cluster, anything beyond the Server View does not provide much benefit. Depending on which view is selected, the tree structure in the left-hand side navigation pane changes. The following screenshot shows the view's drop-down list in the Proxmox GUI: