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74-409 · Question #6

74-409 Question #6: Real Exam Question with Answer & Explanation

The correct answer is D. On all VMs, enable Storage Quality of Service (QoS).. Storage QoS provides the ability to specify a maximum input/output operations per second (IOPS) value for your virtual hard disk. An administrator can throttle the storage I/O to stop a tenant from consuming excessive storage resources that may impact another tenant. An administr

Question

You administer a Windows Server 2012 R2 Hyper-V host server that contains production and test virtual machines (VMs). You plan to optimize the performance of the VMs. The following settings must be applied to the VMs: - You must set a maximum value for the input/output operations per second (IOPS) on the test VMs. - You must set a minimum value for the IOPS on the production VMs. You need to configure the environment. What should you do?

Options

  • AOn all VMs, enable Network Quality of Service (QoS).
  • BCreate a shared virtual hard disk (VHD).
  • COn the Hyper-V host server, enable Resource Metering.
  • DOn all VMs, enable Storage Quality of Service (QoS).

Explanation

Storage QoS provides the ability to specify a maximum input/output operations per second (IOPS) value for your virtual hard disk. An administrator can throttle the storage I/O to stop a tenant from consuming excessive storage resources that may impact another tenant. An administrator can also set a minimum IOPS value. They will be notified when the IOPS to a specified virtual hard disk is below a threshold that is needed for its optimal performance. The virtual machine metrics infrastructure is also updated, with storage related parameters to allow the administrator to monitor the performance and chargeback related parameters. Maximum and minimum values are specified in terms of normalized IOPS where every 8 K of data is counted as an I/O.

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