CV0-002 · Question #367
A company is performing a P2V conversion of all developer machines to a VDI. Which of the following should the administrator configure to ensure disk throughput is not saturated by one machine or…
The correct answer is D. Disk I/O throttling on the VMs. To prevent disk throughput saturation in a VDI environment, disk I/O throttling should be configured on each virtual machine.
Question
A company is performing a P2V conversion of all developer machines to a VDI. Which of the following should the administrator configure to ensure disk throughput is not saturated by one machine or another?
Options
- AEach VM to use a virtual SCSI adapter
- BDisk I/O monitoring on the VMs
- CDCB on the FC fabric
- DDisk I/O throttling on the VMs
How the community answered
(46 responses)- A13% (6)
- B2% (1)
- C7% (3)
- D78% (36)
Why each option
To prevent disk throughput saturation in a VDI environment, disk I/O throttling should be configured on each virtual machine.
Using a virtual SCSI adapter is a standard method for attaching virtual disks but does not inherently provide a mechanism to limit or prioritize disk I/O to prevent saturation by individual VMs.
Monitoring allows administrators to observe disk I/O usage and identify saturation but does not actively prevent a VM from overutilizing disk resources.
Data Center Bridging (DCB) is related to network QoS and lossless Ethernet for converged networks, not for controlling or throttling disk I/O among individual virtual machines on a hypervisor.
Disk I/O throttling, also known as Quality of Service (QoS) for storage, allows an administrator to define specific limits on the number of I/O operations per second (IOPS) or throughput (MB/s) that a virtual machine can consume. This directly prevents any single developer VM from monopolizing the shared underlying physical storage resources, ensuring that no machine can saturate the disk throughput and guaranteeing fair access for all VMs in the VDI environment.
Concept tested: Virtual machine storage I/O throttling/QoS
Source: https://learn.microsoft.com/en-us/windows-server/virtualization/hyper-v/manage/set-quality-of-service-for-hyper-v-storage
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