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Question 25 - NCP-MCA discussion

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Refer to the exhibit.

An administrator created the Playbook shown in the exhibit to allow for manual reduction of vCPU count on any selected VM within their environment. During a test run of the play on one of the VMs running in development, the administrator ran into an error that the Playbook cannot be completed against the selected VM.

Here are the details of the affected VM:

VM Name: VM2

vCPU: 4

RAM: 8 GB

OS: Windows 2016

Hypervisor: AHV

What caused this Playbook to fail?

A.
This play cannot be executed against a VM on AHV.
Answers
A.
This play cannot be executed against a VM on AHV.
B.
The VM needs to be powered off before vCPU can be reduced.
Answers
B.
The VM needs to be powered off before vCPU can be reduced.
C.
Reduction of vCPU cannot be done on a VM with a running snapshot.
Answers
C.
Reduction of vCPU cannot be done on a VM with a running snapshot.
D.
The play will cause the VM to go below the minimum vCPU.
Answers
D.
The play will cause the VM to go below the minimum vCPU.
Suggested answer: C

Explanation:

The Playbook is designed to manually reduce the vCPU count on any selected VM within the environment. However, it failed during a test run on VM2 because there was a running snapshot of the VM.According to Nutanix Multicloud Automation (NCP-MCA) principles, you cannot reduce the vCPU count on a VM that has an active snapshot1.This is because the snapshot captures the state of the VM configuration and data, and reverting to a snapshot will restore both the guest OS and the virtual hardware2. Therefore, changing the vCPU count while a snapshot is running will cause inconsistency and error. The other options are incorrect because:

A)The Playbook can be executed against a VM on AHV, as long as there is no snapshot running3.

B)The VM does not need to be powered off before vCPU can be reduced, as this can be done using hot-plug CPU feature4.

D) The play will not cause the VM to go below the minimum vCPU, as the minimum number of vCPUs is set to 1 in the Playbook, and the VM has 4 vCPUs initially.Reference:Nutanix Support & Insights,Solved: Snapshot query !! - VMware Technology Network VMTN,Calm on ESXi Deployment | Nutanix Community,Virtual CPU Configuration and Limitations - VMware Docs

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asked 23/09/2024
Josiah Pardee
46 questions
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