A storage administrator has been asked to use Hitachi Device Manager (HDvM) to provide information about storage utilization by hosts for an urgent meeting. When the report is created, several hosts…

Question

Options

• AThe hosts do not have the HDvM agent installed.
• BThe hosts have not been refreshed.
• CThe storage system has not been refreshed.
• DThe storage system polling is not synchronized with the report creation.

• A
  89% (48)
• B
  2% (1)
• C
  7% (4)
• D
  2% (1)

Explanation

Host utilization data in HDvM is collected by the HDvM agent, a software component that must be installed directly on each host - without it, HDvM has no mechanism to gather capacity or I/O metrics from that host, resulting in blank utilization data in reports.

Why the distractors are wrong:

• B (hosts not refreshed): Refreshing a host updates its configuration data in HDvM, but if no agent is installed, there is nothing to refresh - the data simply doesn't exist.
• C (storage system not refreshed): Refreshing the storage system updates LUN/volume information, not host-side utilization metrics; these are two separate data collection paths.
• D (polling not synchronized): Polling synchronization affects timing of data collection, not whether data exists at all - missing data entirely points to a collection gap, not a timing gap.

Memory tip: Think of the HDvM agent like a fitness tracker on a person's wrist - the storage system is the gym, and you can know everything about the gym's equipment (storage refresh), but without a tracker on the person (agent on the host), you get zero data about that individual's activity.

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