Fault-tolerant virtual machines are always anticipated in a highly available environment. Fault Tolerance not only ensures high availability but also promises stability for your virtual machines by minimizing the impact of failover rates. The more you use fault tolerance, the more you will need the skills in Fault Tolerance troubleshooting. In the upcoming section, we will discuss some of the most common problems relevant to a virtual machine's fault tolerance and how to troubleshoot them.
Before we get into troubleshooting, here's a list of some best practices for VMware Fault Tolerance configuration to avoid having problems: