vSphere HA Cluster Basics

vSphere is a virtualization environment that allows users to create clusters consisting of multiple hosts. A host is a physical computer which delivers the computing power to run VMs. In order to coordinate the resource allocation, vSphere installs the ESXi hypervisor on each host. The VMs themselves are saved on storage devices which are combined into one or multiple virtual DataStores. In addition to normal clusters vSphere also allows the configuration of HA clusters. VMs in a HA cluster are automatically restarted on a different host if a failure is detected.

Chapter Overview

Chapter	Content
vSphere HA Cluster Basics	Current chapter
Requirements and Installation	The requirements and installation instructions for using the vSphere HA Cluster with WinCC OA
Notes and Restrictions	Additional notes and restrictions of the vSphare HA Cluster with WinCC OA.