Which of the following drives provides the best read and write performance in ideal working conditions?

Question

Options

• ASAS
• BSSD
• CSATA
• DNL-SAS

• A
  6% (2)
• B
  77% (27)
• C
  3% (1)
• D
  14% (5)

Explanation

SSDs (Solid State Drives) deliver the best read/write performance because they use flash memory with no moving parts, enabling microsecond access times, high IOPS, and throughput that far exceeds any spinning-disk technology. SAS (Serial Attached SCSI) drives are high-performance spinning disks used in enterprise settings, but mechanical latency still limits them compared to flash. SATA drives use the same spinning-disk technology as SAS but on a slower interface, making them the weakest performer among the mechanical options. NL-SAS (Near-Line SAS) uses a SAS interface attached to slower, high-capacity desktop-class platters - optimized for capacity over speed, placing it last in performance rankings.

Memory tip: Think "No moving parts = No mechanical delay" - SSDs win on speed precisely because there's nothing spinning or seeking. Rank the rest by interface speed: SAS > SATA > NL-SAS.

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