The vSAN cluster fault domain summary tab provides details about CPU, CPU Cores, Memory, Disc Space and Alerts associated with the fault domain of the vSAN cluster.
Where To View vSAN Cluster Fault Domain Summary
On the menu, click Environment > VMware vSAN > vSAN and Storage Devices > vSAN Cluster > Fault Domain.
You can also view relationship details and heat map details for the selected vSAN fault domain. The relationship section provides information about the relationship between the objects in your vSAN cluster. The heat map helps you to identify potential problems for the objects in your vSAN fault domain.