If your system is based on VMs, making sure they are backed up and secure is one of the most important things to do as an administrator. Considering a proper backup plan – when to perform it, how and what to store in it, and so on – will be crucial for ensuring that your disaster recovery/business continuity plans work. In this section, we will try to investigate what is possible when it comes to backing Azure VMs up and how to implement proper backup policies. When it comes to backing up a VM in Azure, you have to understand the reason you need to do so. Let's take a look at the workloads that can be run on VMs:
- Stateless services, which can be easily migrated to another machine.
- Stateful services, which store their state directly on a machine. In the case of failure, you may lose data.
Unless you are running stateful services, implementing sophisticated backup plans for your machines may not necessarily be something...