Compared with other high-end flash storage (more than one engine), Which features help high- end storage of OceanStor Dorado support higher reliability?

Question

Options

• APower failure protection
• BDual disk failure tolerance
• CDual controller failure without service interuption
• DOne engine failure without interuption

• A
  11% (4)
• B
  8% (3)
• C
  81% (29)

Explanation

Options C and D are correct because they describe fault tolerance at a higher architectural level than what competing high-end storage systems typically provide. OceanStor Dorado is designed so that even when an entire engine fails (D) or two controllers fail simultaneously (C), I/O services continue uninterrupted - a capability that sets it apart from most multi-engine competitors. Options A and B are incorrect not because they are false, but because they are standard features found across virtually all enterprise-class flash storage systems; power failure protection and dual disk failure tolerance are baseline expectations, not differentiators. The exam is testing your ability to identify what makes Dorado's reliability architecture superior, not simply what features it includes.

Memory tip: Think "catastrophic vs. common." Power failure protection (A) and dual-disk tolerance (B) guard against common, expected failures that every vendor covers. Surviving a whole engine failure (D) or two simultaneous controller failures (C) are catastrophic-scenario protections that only Dorado's architecture handles without interruption - those are the differentiators.

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