The VxRail plugin Physical view fails to populate data or shows an error indicating a failure to load host data. This prevents administrators from seeing the physical topology of the cluster.
This issue occurs when the ESXi host build version is higher than the vCenter Server build version. The VxRail plugin requires vCenter to be at an equal or higher build level to correctly parse and display physical host data.
Refer : vCenter version to ESXi version
Also Refer below Dell knowledge base articles which is related to the Dell VxRail Physical view issue :
Dell VxRail: Physical view missing due to DNS resolution failures
Dell EMC VxRail: Physical view not working after a code upgrade