Which of the following models does not support expansion of controller nodes? (Single-choice)

Question

Options

• AX6000(all-flash mode)
• BX8000(all-flash mode)
• CX9000(all-flash mode)
• DX8000(HDD mode)

• A
  80% (52)
• B
  3% (2)
• C
  11% (7)
• D
  6% (4)

Explanation

Option A (X6000 in all-flash mode) is correct because the X6000 all-flash configuration uses a fixed controller architecture - its controller nodes cannot be scaled out after initial deployment, making it unsuitable for environments that require incremental controller expansion.

The distractors (B, C, D) are wrong because the X8000 (both all-flash and HDD modes) and the X9000 (all-flash mode) are higher-tier platforms designed with horizontal scalability in mind, explicitly supporting the addition of controller nodes to grow compute and I/O capacity over time.

Memory tip: Think of the "6" in X6000 as "fixed/frozen" - the smallest model in the X-series lineup trades expandability for simplicity, while the larger X8000 and X9000 are enterprise-grade scale-out systems. If you remember that controller expansion is a premium feature tied to the higher-numbered (more capable) models, you can quickly eliminate the X6000 all-flash option.

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