Which performance feature is provided by the Hitachi Unified Storage systems controller architecture?

Question

Options

• Aautomatic cache segment resizing
• Bautomatic controller load balancing
• Cautomatic front-end storage group load balancing
• Dautomatic front-end port hardware load balancing

• A
  3% (1)
• B
  88% (29)
• C
  6% (2)
• D
  3% (1)

Explanation

Hitachi Unified Storage (HUS) systems use a multi-controller architecture specifically designed to automatically balance workloads across controllers, distributing I/O processing evenly without manual intervention - this is the core performance differentiator of the HUS controller design. Options A and C are fabricated features: HUS does not dynamically resize cache segments automatically, nor does it load-balance at the front-end storage group level as a built-in architectural feature. Option D is also incorrect because hardware-level front-end port load balancing is not an automatic controller architecture feature - port assignment and path management are handled through host multipathing software (like HDLM), not the controller itself. Memory tip: Think "controller = balancer" - the HUS controller architecture solves controller-level bottlenecks, so when the question mentions the controller architecture as the subject, the answer will be something the controllers do to help each other, which is sharing (balancing) the load.

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