Which are the main features of distributed storage? (Multiple choice)

Question

Options

• ADeployed on general purpose servers.
• BCan expand capacity by adding servers.
• CCan reduce capacity by removing servers.
• DCan reduce capacity by removing servers.

• A
  79% (19)
• D
  21% (5)

Explanation

Distributed storage systems run across general-purpose commodity servers (A) rather than expensive specialized hardware, making them cost-effective and widely deployable. They are elastically scalable in both directions: you can add servers to expand capacity (B) or remove servers to shrink capacity (C) - this elastic horizontal scaling is a defining characteristic that distinguishes distributed storage from traditional monolithic systems.

Note on option D: As written, D is identical to C ("Can reduce capacity by removing servers"), which appears to be a duplicate/typo in the question. Since C is already marked correct, D being listed as a separate wrong answer is likely an error - both state the same thing. In a well-formed question, D would typically be a distinct distractor (e.g., "Requires proprietary dedicated hardware").

Memory tip: Think of distributed storage as a LEGO set - built from standard, interchangeable bricks (general-purpose servers), and you can freely snap more bricks on to grow or pull bricks off to shrink. Any system that can only grow (or only shrink, or requires special bricks) is missing what makes distributed storage distributed.

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