Dell EMC Associate – Cloud Infrastructure and Services v4 — Question 8

Which storage data protection technique provides space-optimal data redundancy to prevent data loss against multiple disk drive failures?

Answer options

• A. Erasure coding
• B. Cache protection
• C. RAID
• D. Dynamic disk sparing

Correct answer: A

Explanation

Erasure coding is designed to provide space-efficient redundancy, allowing data to be reconstructed even if multiple drives fail. In contrast, RAID, while it offers redundancy, may not be as space-efficient as erasure coding, and cache protection and dynamic disk sparing do not directly address data redundancy related to disk failures.