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CV0-002 · Question #323

A Type 1 hypervisor has the following specifications: RAM 128GB CPU 4 socket quad-core Storage 16TB Each VM must have 8GB RAM, 1 vCPU, and 512GB storage. Which of the following is the MAXIMUM number o

The correct answer is A. 14. The maximum number of VMs that can be hosted on the hypervisor is 14, determined by the most constrained resource after accounting for typical hypervisor overhead.

Cloud architecture

Question

A Type 1 hypervisor has the following specifications:

RAM 128GB CPU 4 socket quad-core Storage 16TB Each VM must have 8GB RAM, 1 vCPU, and 512GB storage. Which of the following is the MAXIMUM number of VMs that can be hosted on this hypervisor?

Options

  • A14
  • B15
  • C31
  • D32

How the community answered

(59 responses)
  • A
    81% (48)
  • B
    10% (6)
  • C
    5% (3)
  • D
    3% (2)

Why each option

The maximum number of VMs that can be hosted on the hypervisor is 14, determined by the most constrained resource after accounting for typical hypervisor overhead.

A14Correct

The maximum number of VMs is limited by the resource with the lowest capacity after accounting for the hypervisor's own resource consumption. Assuming a Type 1 hypervisor requires an overhead of 16GB RAM and 2 CPU cores, the calculations are: RAM: (128GB - 16GB) / 8GB per VM = 14 VMs; CPU: (16 cores - 2 cores) / 1 vCPU per VM = 14 VMs; Storage: (16TB * 1024GB/TB) / 512GB per VM = 32 VMs. Thus, the limiting factor is 14 VMs.

B15

15 VMs would be possible if, for example, only 8GB RAM and 1 CPU core were reserved for the hypervisor, but this doesn't align with the limiting factor of 14 after appropriate overhead.

C31

31 VMs is primarily limited by storage capacity without considering CPU or RAM limitations, especially after hypervisor overhead.

D32

32 VMs is the maximum based purely on storage capacity, but RAM and CPU resources become the bottleneck much sooner, especially when factoring in hypervisor overhead.

Concept tested: Hypervisor resource capacity planning

Source: https://learn.microsoft.com/en-us/windows-server/virtualization/hyper-v/plan/plan-hyper-v-scalability-in-windows-server

Topics

#hypervisor#VM capacity planning#resource allocation#IaaS

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