At site X, the data traffic of the LUN mapped to the host suddenly increases during peak hours. Which of the following technologies of OeanStor Dorado can ensure the smooth operation of services on…

Question

Options

• ASmartQoS lower limit guarantee
• BSmartQos burst traffic control
• CWear leveling
• DSmartQoS online control

• A
  3% (1)
• B
  81% (26)
• C
  13% (4)
• D
  3% (1)

Explanation

SmartQoS burst traffic control is correct because it is specifically designed to handle sudden, temporary spikes in I/O demand. When a LUN experiences an unexpected surge during peak hours, burst control allows the system to temporarily exceed the normal QoS ceiling by drawing on reserved bandwidth/IOPS headroom - keeping services running smoothly without manual intervention.

Option A (lower limit guarantee) sets a minimum performance floor to prevent starvation, not a mechanism for absorbing sudden surges - it protects the bottom, not the top.

Option C (wear leveling) is a NAND flash longevity technique that distributes writes evenly across storage cells; it is entirely unrelated to traffic management or QoS.

Option D (online control) is a management capability for adjusting QoS policies in real time, but it requires manual tuning - it does not automatically absorb burst traffic the way Option B does.

Memory tip: Match the keyword in the scenario to the keyword in the answer. The question says traffic "suddenly increases" - that's a burst. Option B is the only choice with "burst" in its name, making it the direct fit.

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