You are working within a Hitachi Device Manager environment. What are three benefits of implementing Hitachi Dynamic Provisioning (HDP)? (Choose three.)

Question

Options

• AData written across multiple disks optimizes performance.
• BUser capacity can be allocated before storage is purchased.
• CUser data is automatically mirrored to secondary storage.
• DHDP volumes can be dynamically shrunk.
• EHDP volumes can be dynamically expanded.

• A
  91% (30)
• C
  6% (2)
• D
  3% (1)

Explanation

Hitachi Dynamic Provisioning (HDP) is a thin provisioning technology that uses a shared pool of physical drives. A is correct because HDP stripes data across all drives in the pool, distributing I/O load and maximizing throughput - similar to RAID-0 within the pool. B is correct because thin provisioning lets you present (allocate) more virtual capacity to hosts than physically exists, so you can assign storage before buying more hardware. E is correct because HDP V-VOLs (virtual volumes) can be non-disruptively expanded at any time as pool capacity grows.

C is wrong because mirroring is handled by separate Hitachi features like TrueCopy or ShadowImage - HDP does not automatically replicate data. D is wrong because shrinking HDP volumes is not supported; enterprise thin provisioning is a one-way street (expand only) to avoid data loss risks.

Memory tip: Think "A-B-E = Accelerate, Budget, Expand" - HDP accelerates I/O via striping, helps budget by pre-allocating before purchase, and lets volumes expand on demand. If an answer implies shrinking or auto-mirroring, it's not HDP.

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