If you use vCenter Server to manage your hosts, you can review information on storage usage and visually map relationships between all storage entities that are available in vCenter Server.
In the vSphere Web Client, for any inventory object except networking, storage usage data appears in the Monitor tab.
In the vSphere Client, for any inventory object except networking, the storage usage data appears in the Storage Views tab. To view this tab, you must have the vCenter Storage Monitoring plug-in, which is generally installed and enabled by default. In the vSphere Client, you can display storage information as storage topology maps.
Reports display relationship tables that provide insight about how an inventory object is associated with storage entities. They also offer summarized storage usage data for the object’s virtual and physical storage resources. Use the Reports view to analyze storage space utilization and availability, multipathing status, and other storage properties of the selected object and items related to it.
If you use arrays that support storage vendor providers developed through Storage APIs - Storage Awareness, the Reports view offers additional information about storage arrays, storage processors, ports, LUNs or file systems, and so on. For more information about vendor providers, see the vSphere Storage documentation.
Storage topology maps visually represent relationships between the selected object and its associated virtual and physical storage entities. Storage maps are not available in the vSphere Web Client.