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. https://www.unixarena.com/2019/07/vmware-vsphere-how-to-remove-esxi-node-from-ha.html/
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VMWARE VSPHERE – HOW TO REMOVE HOST FROM HA ?
How to remove ESXi node from vSphere HA? VMware vSphere HA (High Availablity) enables a server administrator to aggregate physical servers on the same to create a logical group called a high availability cluster. vSphere HA is responsible to restart the failed VM’s on other available ESXi nodes to reduce the application downtime. When you remove a host from a cluster, its resources are deducted from the total resources of the cluster. The state of the virtual machines deployed on the host determines whether they are migrated to other hosts within the cluster, or remain on the host and are removed from the cluster. READ MORE