Describe Sizing and Design Considerations (performance Parameters, Environmental Limits, Workload Characterization). MIDRANGE-STORAGE-SOLUTIONS-DESIGN Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   Which performance parameter is defined as the number of input/output operations completed per second by a storage system?

   • ALatency
   • BThroughput
   • CIOPS
   • DResponse time
   Reveal Solution Discussion Select an answer first
2. 17expert · hard

   A cloud service provider is sizing a Dell PowerStore for a multi-tenant environment. The workload is a mix of 60% random reads and 40% random writes, with an average I/O size of 16 KB. The peak IOPS requirement is 30,000, and the average latency target is 2 ms. The administrator is considering a configuration with 20 drives. Which additional factor is most critical to validate before finalizing the design?

   • AThe network bandwidth between the hosts and the array
   • BThe sustained IOPS at the 2 ms latency target
   • CThe number of tenants and their individual IOPS requirements
   • DThe total capacity of the 20 drives
   Reveal Solution Discussion Select an answer first
4. 18application · medium

   A transportation company is deploying a Dell PowerStore for its ticketing system. The workload is 60% random reads and 40% random writes, with an average I/O size of 8 KB. The peak IOPS requirement is 12,000, and the latency target is 3 ms. The administrator is monitoring the array and notices that the average response time is 4 ms during the peak. Which performance parameter is the administrator most likely to adjust to bring the response time back to the target?

   • AIncrease the number of drives in the array
   • BReduce the number of front-end ports
   • CChange the RAID policy to a higher parity level
   • DIncrease the cache size
   Reveal Solution Discussion Select an answer first
5. 19foundation · easy

   In storage performance terminology, which term refers to the amount of data transferred per unit of time, typically expressed in MB/s or GB/s?

   • AThroughput
   • BQueue depth
   • CIOPS
   • DLatency
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6. 20application · medium

   A government agency is deploying a Dell PowerStore 5200T in a data center that has a strict power budget. The array is rated for a maximum power draw of 1,800 W. The agency has a 20A/120V circuit available, and the existing cooling system can handle 6,000 BTU/hr. The administrator calculates that the array will produce approximately 6,100 BTU/hr of heat. Which environmental factor will require the administrator to make a design change?

   • AThe power circuit is insufficient because the array's power draw exceeds the circuit's capacity
   • BThe physical footprint is too large for the available rack space
   • CThe power circuit is insufficient because the array requires more than 20A at 120V
   • DThe cooling system is insufficient because the array's heat output exceeds the cooling rating
   Reveal Solution Discussion Select an answer first