VMware Certified Professional - Data Center Virtualization (VCP-DCV) Practice Exam

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What is the default value for the VM Monitoring I/O stats interval in a vSphere High Availability cluster?

60 seconds
90 seconds
120 seconds
180 seconds

The correct answer is: 120 seconds

The default value for the VM Monitoring I/O stats interval in a vSphere High Availability (HA) cluster is 120 seconds. This interval is crucial because it determines how often the system checks the input/output (I/O) activity of virtual machines (VMs) to monitor their health status. When a VM is unresponsive or fails, the HA feature utilizes I/O stats to make informed decisions about restarting the VM on another host within the cluster. Setting this interval to 120 seconds strikes a balance between responsiveness to potential outages and reducing unnecessary overhead from frequent checks. Overall, this configuration helps ensure that VMs receive appropriate monitoring while optimizing resource utilization in a high availability environment. The choice of 120 seconds reflects a conservative approach to managing the tradeoff between maintaining performance and ensuring rapid recovery from faults.