A network administrator is provisioning a hypervisor host server equipped with 128\text{ G… — CompTIA A+ (Core 1 & Core 2)

A network administrator is provisioning a hypervisor host server equipped with $128\text{ GB}$ of physical RAM. The host hypervisor requires $16\text{ GB}$ of RAM reserved strictly for host system operations and management overhead. If each guest virtual machine requires $12\text{ GB}$ of dedicated RAM, what is the maximum number of guest virtual machines that can run concurrently on this host without exceeding physical memory capacity?

Cevap: 9 VMs

Cevap

To find the maximum number of concurrent guest virtual machines supported without memory overcommitment, first subtract the

16\text{ GB}

reserved hypervisor overhead from the total

128\text{ GB}

physical RAM, leaving

112\text{ GB}

. Dividing

112\text{ GB}

by the

12\text{ GB}

required per VM yields approximately

9.33

. Since partial virtual machines cannot be instantiated, the host supports a maximum of 9 fully provisioned VMs.

Adım Adım Çözüm

Calculate RAM available for virtual machines

128\text{ GB} - 16\text{ GB} = 112\text{ GB}

Deduct reserved hypervisor overhead from total physical RAM to ensure host operating system stability.

Calculate guest VM capacity

112\text{ GB} / 12\text{ GB} = 9.333...

virtual machines

Determine how many

12\text{ GB}

allocations fit into the remaining RAM pool.

Determine maximum concurrent VMs

9 virtual machines

Take the floor of the result because only complete virtual machines with full RAM allocations can run.

Anahtar Kavram

Virtual Machine RAM Capacity Planning and Hypervisor Overhead

Tahmini Süre:1m 30s

Soru

Cevap

Adım Adım Çözüm

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