Which feature of the Hitachi Unified Storage model 150 distinguishes it from models 110 and 130?

Question

Options

• Asupport for I/O modules
• Bsupport for 16 FC host ports
• Csupport for 32GB of cache
• Dsupport for 4U density trays

• A
  96% (23)
• B
  4% (1)

Explanation

Option A is correct because the HUS 150 introduced support for I/O modules - a modular host interface design that allows flexible expansion of connectivity options - which was not available on the 110 or 130 models, which had fixed, non-expandable host interfaces.

Option B is incorrect because FC host port counts are present across multiple HUS models; having FC ports is not unique to the 150. Option C is wrong because while cache capacity does scale up the HUS line, the 32GB figure is not the architectural differentiator between the 150 and its lower siblings. Option D is incorrect because 4U density tray support relates to drive expansion, a characteristic shared or similarly configured across the HUS family, not a 150-exclusive distinction.

Memory tip: Think of the 150 as the "modular" model - the "M" in "Modules" pairs with the higher number. When a storage model jumps in capability tier, look for flexibility of connectivity (I/O modules) as the hallmark enterprise upgrade, not just raw spec bumps like cache or port counts.

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