Which of the following descriptions of the OceanStor Dorado AA architecture is incorrect?

Question

Options

• ALUNs do not belong to any one controller
• BThe path accessed by the host is active-active
• CLoad balancing to all controllers
• DWhen only the multipath that comes with the host operating system can be used, ALUA mode

• A
  9% (6)
• B
  3% (2)
• C
  12% (8)
• D
  76% (52)

Explanation

Option D is incorrect because in OceanStor Dorado's Active-Active (AA) architecture, when only the native host OS multipath software is available, non-ALUA mode should be used - not ALUA. ALUA (Asymmetric Logical Unit Access) implies some paths are preferred over others, which contradicts the symmetric, fully-active nature of AA architecture where all paths carry equal priority.

Options A, B, and C are all accurate descriptions of AA architecture: LUNs are truly shared across controllers (not owned by any single one), all host paths are simultaneously active rather than having a standby, and I/O load is distributed across all controllers for balanced performance. These three properties together define what makes AA different from traditional active-passive designs.

Memory tip: Think of the word "Asymmetric" in ALUA - it signals unequal paths, which clashes with Active-Active (AA). If everything is active and equal, there's nothing asymmetric to manage, so ALUA has no role when using native OS multipath in a true AA setup.

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