I have a HA Cluster with three ESXi Hosts. All are running ESXi 5.5 which are managed by vCenter 5.5
My HA configuration is as below for that cluster.
Host Monitoring Enabled.
Admission Control: Enable
Admission Control Policy: Host failures the cluster tolerates = 1
My Cluster "Resource Allocation" tab shows as below.
Does this mean, 48704 Mhz of CPU and 385469 MB of RAM are always reserved and never allocated to any VM? Those will be used only when one host fails?
All the three hosts in the cluster is now using more than 90% of CPU all the time. We cannot optimize the VMs as of now due to the design of the applications and we have not CPU over-committed on any VMs. For example, this is the status of one ESXi CPU utilization and that is almost same in all three.
In this situation,
If I disable HA, will I get the reserved CPU and Memory back to the ESXi hosts? If one host fails all the VMs will still be moving and running with two ESXi hosts (I know there is a downtime)??
Can someone clarify in detail?