nerdexam
Dell-EMC

D-PDM-DY-23 · Question #64

What is a fundamental principle for effective data deduplication in PowerProtect Data Manager?

The correct answer is C. Identifying duplicate data across backups. Identifying duplicate data across backups (C) is the cornerstone of deduplication because the entire purpose of the technology is to detect and eliminate redundant data blocks - storing only unique chunks and referencing duplicates rather than storing them again, which…

PowerProtect Data Manager Concepts and Architecture

Question

What is a fundamental principle for effective data deduplication in PowerProtect Data Manager?

Options

  • ARegular data compression
  • BFrequent full backups
  • CIdentifying duplicate data across backups
  • DHigh-speed network connectivity

How the community answered

(35 responses)
  • A
    6% (2)
  • C
    91% (32)
  • D
    3% (1)

Explanation

Identifying duplicate data across backups (C) is the cornerstone of deduplication because the entire purpose of the technology is to detect and eliminate redundant data blocks - storing only unique chunks and referencing duplicates rather than storing them again, which dramatically reduces storage consumption over time.

Why the distractors are wrong:

  • A (Regular data compression) - compression reduces file size by encoding data more efficiently, but it's a separate technique from deduplication; you can have one without the other.
  • B (Frequent full backups) - full backups actually increase storage demand and give deduplication more redundant data to wade through; incremental strategies work better alongside dedup.
  • D (High-speed network connectivity) - network speed affects backup performance and throughput, but has no bearing on whether duplicates are identified or eliminated.

Memory tip: Think of deduplication as a "find duplicates" operation - the word itself contains the answer. De-duplic-ation = removing duplicates, so the fundamental principle must be finding those duplicates first. If you see an answer about identifying redundant data, that's always the dedup answer.

Topics

#data deduplication#deduplication principles#duplicate identification

Community Discussion

No community discussion yet for this question.

Full D-PDM-DY-23 Practice