This solution encompasses a fully functional PowerFlex rack system which is engineered for complete fault redundancy and ability to scale out across compute and storage dimensions. At a minimum, three controller nodes for running management stack and four PowerFlex hyperconverged nodes running VMware ESXi 6.5 or greater are required to deploy GKE on-prem. For more information about the ESXi version, see Google Compatibility Matrix.

Additionally, at least one outbound connection to Google Cloud APIs (*.googleapis.com) is required to complete the Anthos cluster registration and deployment processes.

The following figure describes how Anthos can manage multiple Anthos clusters across geographically dispersed PowerFlex systems through a single pane of glass with GCP console:

Figure 3.                  Physical design of Anthos with multiple PowerFlex rack systems geographically dispersed