Interpret Data Exclusion and Headroom Features. POWERMAX-DESIGN-V2 Practice Questions (Page 5)

Questions 21–25

1. 21expert · hard

   A storage team is troubleshooting a capacity alert. The Unisphere for PowerMax Data Exclusion report shows that 20% of used capacity is excluded (snapshots and internal copies). The Headroom report shows 15% headroom. The team must decide whether to expand the array. Which interpretation is correct?

   • AThe array has 15% headroom, but this figure already accounts for excluded data, so expansion may not be needed if growth is within that margin.
   • BExpansion is mandatory because any excluded data reduces effective capacity.
   • CThe array is overcommitted because headroom (15%) is less than excluded data (20%).
   • DThe array is 20% overcommitted because excluded data is consuming capacity that could be used for growth.
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2. 22expert · hard

   A cloud service provider is planning for a 20% annual growth in customer data. The Unisphere for PowerMax Headroom report shows a headroom of 30% with current Data Exclusion settings. The provider must decide whether to purchase additional storage now or later. Which factor should most influence the decision?

   • AThe current headroom percentage alone, since it directly indicates available capacity.
   • BThe number of storage groups configured on the array.
   • CThe amount of excluded data, since it reduces effective capacity.
   • DThe projected growth rate and the time it takes to procure and install new storage.
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4. 23foundation · easy

   Why is it important to consider both Data Exclusion and Headroom when assessing storage capacity on a PowerMax system?

   • ABecause Data Exclusion determines the performance of the array, while Headroom determines the availability of the array
   • BBecause Data Exclusion shows the physical capacity of the array, while Headroom shows the logical capacity
   • CBecause Data Exclusion shows the amount of data that can be compressed, while Headroom shows the amount of data that can be deleted
   • DBecause Data Exclusion affects the accuracy of current capacity reports, while Headroom affects the ability to meet future capacity demands
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5. 24foundation · easy

   How can Headroom metrics be used to assess future growth potential on a PowerMax system?

   • ABy showing the number of volumes that can be created
   • BBy showing the maximum capacity that can be added without exceeding physical or performance limits
   • CBy showing the current used capacity and free space
   • DBy showing the performance impact of adding new workloads
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6. 25application · medium

   A company is migrating to a new PowerMax array. The administrator wants to ensure that the Headroom report provides an accurate forecast of capacity needs for the next two years. What should the administrator configure?

   • ASet the growth rate and data exclusion settings in the Headroom report.
   • BCreate additional storage groups to distribute the workload.
   • CSet the snapshot retention period to the maximum value.
   • DEnable compression on all volumes to maximize usable capacity.
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