- In High Availability when the host crashes or fails the VM gets restarted on another host.
- So there is very small down time for restarting VM.
- It provide automatic sever failure detection.
- HA is complete automated process.
- No passive standby ESXi host is require neither any extra VM (No Need Backup)
- HA does not use Vmotion
- Enable HA on the cluster setting in order to use HA.
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For HA, We need following:
- Cluster - Group of ESXi Host
- Shared Storage
- Vcenter server configured for the environment
- Resource check - capacity check (It keep reserve space for HA)
This is basic guide about HA. There is many more available on Internet so keep exploring. Here I am finishing Virtualization If you want to learn more then you can learn from YouTube and other resources for FREE.
Happy Learning !!!!!