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HP0-J73 · Question #186

An enterprise company needs the fastest deduplication technology for both backup and restore. Which technology should the company implement?

The correct answer is B. object-level differencing. Object-level differencing delivers the fastest deduplication performance for both backup and restore by tracking changes at the application object level, minimizing the volume of data processed in each operation.

Understanding HP Storage Components and Technologies

Question

An enterprise company needs the fastest deduplication technology for both backup and restore. Which technology should the company implement?

Options

  • Ahash-based chunking
  • Bobject-level differencing
  • Capplication-based cloning
  • Dhost-based file swapping

How the community answered

(35 responses)
  • A
    9% (3)
  • B
    74% (26)
  • C
    3% (1)
  • D
    14% (5)

Why each option

Object-level differencing delivers the fastest deduplication performance for both backup and restore by tracking changes at the application object level, minimizing the volume of data processed in each operation.

Ahash-based chunking

Hash-based chunking requires computing cryptographic hashes for every data chunk to identify duplicates, introducing significant computational overhead that reduces backup and restore throughput compared to object-aware differencing.

Bobject-level differencingCorrect

Object-level differencing operates at a semantic level above raw blocks or files, understanding the internal structure of application objects such as virtual machine disks or databases, and stores only the changed portions between versions. This targeted approach dramatically reduces the data written during backup and the data read during restore compared to lower-level methods, yielding superior throughput in both directions and making it the optimal choice when speed is the priority.

Capplication-based cloning

Application-based cloning creates full or near-full copies of application data and does not perform differential tracking or deduplication, making it inefficient for repeated backup operations.

Dhost-based file swapping

Host-based file swapping is not a recognized enterprise deduplication technology and does not provide a mechanism for optimizing backup and restore speed through data reduction.

Concept tested: Object-level differencing for fastest backup and restore deduplication

Topics

#deduplication#object-level differencing#backup performance#restore performance

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