Dell EMC Specialist – Systems Administrator, Unity — Question 19

You are designing a solution that will provide integration of a Dell EMC Unity storage array with a virtualized environment by provisioning VMFS datastores accessed through Fibre Channel. The customer uses the infrastructure for VDI deployment and provisioning of regular VMs. The host access is balanced by
Quality of Service (QoS).
Which Unity QoS feature will address the expected Boot storm caused by powering up the virtual desktops at a certain time of the day?

Answer options

• A. Quotas
• B. Density-based Policy
• C. Burst Policy
• D. Host I/O Limit Pause

Correct answer: D

Explanation

The correct answer is D, as the Host I/O Limit Pause feature can temporarily pause I/O operations to manage the load during a Boot storm, thus preventing performance degradation. Options A, B, and C do not specifically address the issue of managing concurrent I/O requests effectively during high-demand scenarios like a Boot storm.