The following reference material from the vSphere 6.5 online documentation will assist you in covering the main information that is needed to know the topics in this objective:
- How vSphere HA works
- Troubleshooting vSphere HA host states
- Troubleshooting Availability
- Configure Proactive HA
- DRS troubleshooting information
- Migration with vMotion
- Migration with Storage vMotion
- Troubleshooting Storage DRS
- Providing Fault Tolerant for Virtual Machines
- Troubleshooting Fault Tolerant Virtual Machines
- DRS Cluster Validity
- Overview Performance Charts for Clusters
IT Wiz Technology Blog 