vSphere High Availability (HA) is a critical feature in VMware vSphere that ensures the high availability and continuous operation of virtual machines (VMs) in the event of host failures. It is designed to provide automatic detection and recovery from host failures, minimizing downtime and maintaining workload availability. Let's explore the features and significance of vSphere High Availability in more detail:
1. Automatic Detection of Host Failures:
* vSphere HA continuously monitors the health and availability of hosts within a cluster.
* It uses a heartbeat mechanism to detect failures by monitoring the communication between the vSphere HA agent running on the host and the master host in the cluster.
* In case of a host failure or network isolation, where the host loses communication with the cluster, vSphere HA triggers the failover process.
2. Failover and VM Restart:
* When vSphere HA detects a host failure, it initiates a failover process to restart the affected VMs on the remaining healthy hosts in the cluster.
* The failed VMs are powered on and restarted on different hosts, ensuring minimal downtime and maintaining workload availability.
* The failover process is orchestrated to ensure t....
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