Assuming default settings, how does HA determine the current failover capacity?

An administrator is configuring a vSphere HA cluster for three ESXi 5.x hosts and their resident virtual machines. The cluster will be configured to support a single host failure. Resource reservations must be enforced during a failover event.

Assuming default settings, how does HA determine the current failover capacity?

A.
Calculating the largest possible CPU and Memory guarantee for any running virtual machine in the cluster, then calculating how many virtual machines of that size can be started on the largest host and reserving space in the cluster accordingly.

B.
Averaging the largest possible CPU and Memory guarantee for any running virtual machine in the cluster, then calculating how many virtual machines of that size can be started on the largest host and reserving space in the cluster accordingly.

C.
Calculating the largest possible CPU and Memory guarantee for any virtual machine in the cluster, then calculating how many virtual machines of that size can be started on the largest host and reserving space in the cluster accordingly.

D.
Averaging the largest possible CPU and Memory guarantee for any virtual machine in the cluster, then calculating how many virtual machines of that size can be started on the largest host and reserving space in the cluster accordingly.

3 Comments on “Assuming default settings, how does HA determine the current failover capacity?

  1. vcp510 says:

    An administrator is configuring a vSphere HA cluster for three ESXi hosts and their resident virtual machines. The cluster will be configured to support a single host failure. Resource reservations must be enforced during a failover event.

    Assuming default settings, how does HA determine the current failover capacity?

    A.
    Using the highest CPU reservation and the available memory values for any given virtual machine in the cluster

    *B.
    Using the highest CPU reservation and memory reservation values of any given virtual machine in the cluster

    C.
    Using an average of the total CPU reservation and memory reservation values of all virtual machines in the cluster

    D.
    Using an average of total CPU reservation and available memory values of all virtual machines in the cluster


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