A customer that runs a database server needs high speed access to the database files. Which internal storage technology offers the best performance?

Question

Options

• ASAS Nearline
• BNVMe
• CSAS HDD
• DSATA HDD

• A
  3% (1)
• B
  87% (27)
• C
  6% (2)
• D
  3% (1)

Explanation

NVMe (Non-Volatile Memory Express) is correct because it connects directly to the CPU via PCIe lanes, delivering sequential read speeds of 3,000–7,000 MB/s and extremely low latency - making it ideal for high-performance database workloads where I/O speed is critical.

SAS Nearline (A) is a hybrid category of slower, high-capacity spinning disks designed for archival and backup use, not performance. SAS HDD (C) is faster than SATA and suitable for enterprise workloads, but as a mechanical drive it is fundamentally limited by rotational speed (~15,000 RPM max) and seek time. SATA HDD (D) is the slowest option here - consumer-grade spinning disks with the highest latency and lowest throughput of the four.

Memory tip: Think of the hierarchy as a racetrack - NVMe is the Formula 1 car (PCIe, no moving parts), SAS HDD is a sports car (fast but still mechanical), SATA HDD is a family sedan, and SAS Nearline is a truck built for cargo, not speed.

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