In the previous chapters, we covered different concepts of virtualization methods and the components needed for a cluster environment. We learned how to build shared storages with DRBD, GlusterFS, CEPH, and others, and how to implement them under Proxmox to build an HA environment. We also learned how to move our existing operating systems to Proxmox.
You might notice that you are centralizing your production platforms in one server. From a system administrator's perspective, if we do not have any backup in hand, it is very dangerous. Therefore, we will go through the backup and restore processes of Proxmox in this chapter, including the following topics: