Define the Key Storage Components Found in Dell PowerEdge Servers, Including Hard Disk Drives (HDDs), Solid State Drives (SSDs), RAID Controllers (PERC), and Backplanes. POWEREDGE-FOUNDATIONS-V2 Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A financial trading firm is deploying a PowerEdge R750 server to run a high-frequency trading application. The application requires extremely low latency for a small, frequently accessed dataset. The administrator plans to use a PERC H755 controller. Which drive configuration will best meet the low-latency requirement?

   • AA single large-capacity 7200 RPM SATA HDD, because it provides the most stable and predictable latency.
   • BA single NVMe SSD, because it provides the lowest possible latency and highest IOPS for the small dataset.
   • CA RAID 0 array of 10K RPM SAS HDDs, because striping reduces the average seek time.
   • DA RAID 1 array of SATA SSDs, because it provides redundancy and low latency.
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2. 12application · medium

   A media company is building a PowerEdge R650 server for a large-scale video surveillance archive. The workload is write-once, read-rarely, and requires the maximum storage capacity at the lowest possible cost. The data does not require high IOPS. Which storage drive type should the administrator select for this archive volume?

   • ANVMe SSDs, because they provide the fastest write speeds for the surveillance stream.
   • BHigh-capacity 7200 RPM SATA HDDs, because they offer the best cost per terabyte for bulk sequential storage.
   • CSATA SSDs, because they offer a good balance of performance and capacity for archival data.
   • D10K RPM SAS HDDs, because they provide the reliability needed for long-term data retention.
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4. 13application · medium

   A university research lab is deploying a PowerEdge R650 server for a big data analytics cluster. The workload involves reading large sequential datasets and writing results periodically. The storage budget is limited, but the lab needs to maximize the total storage capacity within that budget. Which drive configuration should the administrator choose?

   • AA RAID 10 array of 10K RPM SAS HDDs, because it provides high performance and redundancy.
   • BA RAID 5 array of high-capacity SATA HDDs, because it provides the best cost per terabyte and redundancy.
   • CA RAID 0 array of SATA SSDs, because it provides high performance and good capacity.
   • DA single large NVMe SSD, because it offers the highest performance for sequential reads.
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5. 14application · medium

   A PowerEdge R750 server is being assembled with 12 SAS SSDs. The administrator installs the drives into the front bays, connects the backplane to a PERC H755 controller, and creates a RAID 10 virtual disk. The OS is installed on this virtual disk. Which statement correctly describes how these components interact to present storage to the operating system?

   • AThe backplane directly presents each SSD to the OS, and the PERC only provides power management.
   • BThe backplane performs the RAID calculations, and the PERC simply passes data to the OS.
   • CThe OS sees each SSD individually, and the PERC only monitors their health status.
   • DThe PERC presents the RAID 10 virtual disk to the OS, while the backplane provides the physical connection and power to the SSDs.
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6. 15foundation · easy

   In a Dell PowerEdge server, which workload is most appropriate for HDDs?

   • AHosting a virtual desktop infrastructure with many users
   • BRunning a database with heavy concurrent read/write operations
   • CArchival storage of large files that are accessed infrequently
   • DHigh-frequency transaction processing requiring low latency
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