When enabled, what does the path health checking feature of Hitachi Dynamic Link Manager (HDLM) do?

Question

Options

• AIt causes HDLM to rotate I/Os across all healthy paths.
• BIt causes HDLM to automatically check the path status at regular intervals.
• CIt enables the last I/O recovery routine to execute upon path failure.
• DIt logs path status information and generate path health reports.

• B
  97% (28)
• C
  3% (1)

Explanation

Path health checking in HDLM is a monitoring feature that periodically polls all configured paths to detect failures proactively - even on paths not currently carrying I/O - making B correct.

Why the distractors are wrong:

• A describes load balancing (path rotation), which is a separate HDLM feature unrelated to health checking.
• C describes the Intermittent Error Monitor or last-I/O recovery mechanism, a distinct fault-recovery function.
• D describes reporting/logging functionality; health checking is about active detection, not report generation.

Memory tip: Think of "health checking" literally - like a doctor scheduling regular checkups. It checks (polls) at regular intervals (scheduled), which maps directly to option B. If the question mentions "automatic," "periodic," or "intervals," it's pointing at health checking.

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