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Zorluk: OrtaVirtual Machine Resource Requirements and Hardware Support

An IT specialist is preparing a host server to run guest virtual machines (VMs) for software QA testing. The physical computer contains 56 GB56\text{ GB} of installed system RAM. The host operating system requires 5 GB5\text{ GB} of RAM, and the Type 2 hypervisor application requires an additional 3 GB3\text{ GB} of dedicated host RAM overhead. If each guest VM requires 6 GB6\text{ GB} of RAM for optimal performance, what is the maximum number of guest VMs that can run concurrently without overcommitting physical host memory?

  1. A
    9 virtual machines
  2. 8 virtual machinesCevap
  3. C
    7 virtual machines
  4. D
    4 virtual machines

Cevap

8 virtual machines can run concurrently without overcommitting memory.
To determine the maximum number of virtual machines without overcommitting RAM, first subtract the combined host operating system requirement (5 GB5\text{ GB}) and hypervisor overhead (3 GB3\text{ GB}) from total physical RAM (56 GB−8 GB=48 GB56\text{ GB} - 8\text{ GB} = 48\text{ GB}). Then, divide the remaining available memory by the per-VM requirement (48 GB/6 GB=848\text{ GB} / 6\text{ GB} = 8). Therefore, 8 virtual machines can run concurrently.

Adım Adım Çözüm

1
Calculate the total host RAM reservation.
5 GB (Host OS)+3 GB (Hypervisor)=8 GB5\text{ GB} \text{ (Host OS)} + 3\text{ GB} \text{ (Hypervisor)} = 8\text{ GB} total host RAM reserved.
The host OS and hypervisor require dedicated memory to maintain system stability and host management functions.
2
Calculate RAM available for guest virtual machines.
56 GB (Total physical RAM)−8 GB (Host reserved)=48 GB56\text{ GB} \text{ (Total physical RAM)} - 8\text{ GB} \text{ (Host reserved)} = 48\text{ GB} available.
Subtracting host overhead prevents physical memory overcommitment and disk thrashing.
3
Determine maximum guest virtual machines supported.
48 GB/6 GB=848\text{ GB} / 6\text{ GB} = 8 virtual machines.
Dividing the remaining usable RAM by the per-VM requirement yields the maximum concurrent VM capacity.

Anahtar Kavram

Virtual Machine Host Memory Allocation and Overhead Planning
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Konular

Virtual Machine Resource Requirements and Hardware Support

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