2V0-621 · Question #38
An administrator is building a large virtual machine that will require as many vCPUs as the host can support. An ESXi 6.x host has these specifications: - Six 32-core Intel Xeon Processors - 256 GB…
The correct answer is B. 128. ESXi 6.x enforces a hard per-VM limit of 128 vCPUs, so a VM on this host cannot exceed 128 vCPUs even though the host has 192 physical cores total.
Question
An administrator is building a large virtual machine that will require as many vCPUs as the host can support. An ESXi 6.x host has these specifications:
- Six 32-core Intel Xeon Processors
- 256 GB of Memory
- 512 GB Local disk space using VMFS5
What is the maximum number of virtual CPUs that the virtual machine can be allocated?
Options
- A64
- B128
- C192
- D256
How the community answered
(28 responses)- B93% (26)
- C4% (1)
- D4% (1)
Why each option
ESXi 6.x enforces a hard per-VM limit of 128 vCPUs, so a VM on this host cannot exceed 128 vCPUs even though the host has 192 physical cores total.
64 vCPUs is significantly below the ESXi 6.x per-VM maximum of 128 and would unnecessarily limit the VM's CPU resources.
VMware vSphere 6.x defines a configuration maximum of 128 vCPUs per virtual machine regardless of the host's physical core count. The host provides 6 processors times 32 cores equals 192 physical cores, which exceeds the per-VM ceiling, so 128 is the highest allocation possible.
192 equals the total physical core count of the host (6 x 32), but this figure exceeds the ESXi 6.x per-VM vCPU limit of 128, making it an invalid allocation.
256 vCPUs surpasses both the ESXi 6.x per-VM limit of 128 and the host's total physical core count of 192, so this value is not achievable.
Concept tested: ESXi 6.x per-VM vCPU configuration maximum
Source: https://configmax.esp.vmware.com/
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