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Zorluk: OrtaVirtual Machine Resource Requirements and Hardware Support

A field technician is configuring a hypervisor host workstation equipped with 32 GB32\text{ GB} of physical RAM to run four concurrent virtual machines (VMs) for software testing. Each guest VM requires 8 GB8\text{ GB} of dedicated RAM, and the host operating system requires a reserved minimum of 4 GB4\text{ GB} of physical RAM to ensure system stability. What is the minimum amount of additional physical RAM that must be installed in the host workstation to support this deployment?

  1. 4 GB4\text{ GB}Cevap
  2. B
    8 GB8\text{ GB}
  3. C
    0 GB0\text{ GB}, provided dynamic RAM ballooning is enabled
  4. D
    12 GB12\text{ GB}

Cevap

The host workstation requires a minimum of 4 GB4\text{ GB} of additional physical RAM to run four guest VMs of 8 GB8\text{ GB} each alongside the 4 GB4\text{ GB} host OS memory reserve.
Four VMs requiring 8 GB8\text{ GB} each demand 32 GB32\text{ GB} of RAM. Adding the mandatory 4 GB4\text{ GB} host OS memory overhead brings the total system requirement to 36 GB36\text{ GB}. Since the host currently has 32 GB32\text{ GB} installed, a minimum addition of 4 GB4\text{ GB} of physical RAM is necessary to prevent memory starvation.

Adım Adım Çözüm

1
Calculate total memory required for all guest virtual machines.
4 VMs×8 GB/VM=32 GB4 \text{ VMs} \times 8\text{ GB/VM} = 32\text{ GB}.
Each guest VM requires dedicated RAM allocated for its guest operating system and applications.
2
Add the mandatory host operating system memory overhead.
32 GB (guests)+4 GB (host reserve)=36 GB32\text{ GB (guests)} + 4\text{ GB (host reserve)} = 36\text{ GB} total system requirement.
The hypervisor and host OS require dedicated physical RAM to avoid paging and system instability.
3
Subtract currently installed physical RAM from total system requirement.
36 GB (total required)32 GB (installed)=4 GB36\text{ GB (total required)} - 32\text{ GB (installed)} = 4\text{ GB} additional RAM required.
Determines the exact hardware capacity deficit.

Anahtar Kavram

Virtual Machine RAM Capacity Planning and Host Overhead
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