Nutanix Certified Associate Practice Exam

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What is the default behavior for VM High Availability in Nutanix AHV?

VMs are permanently assigned to specific hosts
VMs do not restart after a failure
VMs restart on other hosts as available resources allow
VMs restart only when all hosts are available

The correct answer is: VMs restart on other hosts as available resources allow

In Nutanix AHV, the default behavior for virtual machine High Availability (HA) is that VMs restart on other hosts as available resources allow. This means that in the event of a host failure, the system will automatically restart the affected virtual machines on other hosts in the cluster that have sufficient resources to accommodate them. This feature is essential for maintaining availability and minimizing downtime for applications running on those VMs. The mechanism works by utilizing the cluster's distributed architecture, which ensures that resources are managed efficiently across all available nodes. When a failure is detected, the system evaluates the ongoing workloads and attempts to find an available host with the necessary resources (CPU, memory) to bring the VM back online. By doing so, this approach enhances the resilience of applications, making sure they can continue running with minimal manual intervention. The behavior contrasts with other scenarios such as permanently assigning VMs to specific hosts or requiring all hosts to be online before restarting VMs, which would not provide the flexibility and redundancy that HA is designed to offer.