Now, we are going to learn about the components needed to build a reliable cluster with Proxmox VE. Let's have an overview of the HA environment. We require a shared storage to save system and user data for the VM, a reliable network with redundancy, multiple physical servers, and a fencing device to prevent multiple access to the VM. The topics included in this chapter are:
An introduction to the storage options supported by Proxmox
An introduction to the requirements for a reliable network
An introduction to fencing devices
An introduction to quorum disks