Describe Sizing and Design Considerations (performance Parameters, Environmental Limits, Workload Characterization). MIDRANGE-STORAGE-SOLUTIONS-DESIGN Practice Questions (Page 1)

Questions 1–5

1. 1expert · hard

   A hospital is deploying a Dell PowerStore 5200T in a data center with a limited cooling capacity of 8,000 BTU/hr. The array is rated for a maximum power draw of 1,800 W, which produces approximately 6,100 BTU/hr of heat. The data center also houses other equipment that generates 2,500 BTU/hr of heat. The administrator must ensure the cooling system can handle the total heat load. Which design change is most appropriate?

   • AReduce the power draw of the array by using spinning disks
   • BIncrease the number of drives in the array
   • CMove the other equipment to a different room
   • DUpgrade the cooling system to handle at least 8,600 BTU/hr
   Reveal Solution Discussion Select an answer first
2. 2foundation · easy

   Which workload characteristic is most important to identify when sizing a storage system for an online transaction processing (OLTP) database?

   • ANetwork topology
   • BPower supply redundancy
   • CRead/write ratio
   • DData compression ratio
   Reveal Solution Discussion Select an answer first
4. 3foundation · easy

   When designing a storage solution for a small server room, which environmental limit is most likely to constrain the number of storage enclosures you can install?

   • APhysical space (rack units)
   • BIOPS per drive
   • CNetwork latency
   • DData compression ratio
   Reveal Solution Discussion Select an answer first
5. 4application · medium

   A hospital is deploying a new electronic health record (EHR) system on a Dell PowerStore. The application team reports that during the 9:00 AM to 11:00 AM peak window, the system sustains 8,000 IOPS with an average read/write ratio of 70/30. The storage administrator measures an average latency of 3 ms during this window, but clinicians complain that the EHR feels sluggish. The administrator notices that the average response time reported by the array is 5 ms. Which performance parameter should the administrator investigate first to address the user complaint?

   • AIncrease the total IOPS capacity of the array to reduce queue depth
   • BReduce the read/write ratio by enabling a larger cache for reads
   • CChange the RAID policy to a higher parity level to improve data protection
   • DInvestigate the difference between the array-reported response time and the application-observed latency
   Reveal Solution Discussion Select an answer first
6. 5application · medium

   A logistics company is migrating its tracking database to a Dell PowerStore. The workload is characterized by 80% random reads and 20% random writes, with an average I/O size of 8 KB. The peak IOPS requirement is 20,000. The administrator is using a sizing tool that recommends a specific number of drives. Which additional workload characteristic is most important to include in the sizing model?

   • AThe average I/O size of 8 KB
   • BThe peak IOPS requirement of 20,000
   • CThe peak usage window and duration
   • DThe read/write ratio of 80/20
   Reveal Solution Discussion Select an answer first