D-DP-FN-01: Data Protection and Management Foundations v2

By Dell · Question Mode

QuestionQ15

Fault Tolerance Techniques

A storage system uses erasure coding with 10 data segments and 4 coding segments, with every segment written to a separate drive.

What is the greatest number of drive failures this configuration can tolerate without data loss?

Explanation

Four coding segments provide parity sufficient to reconstruct data after up to four unavailable segments. Because each segment resides on a different drive, the system can withstand four drive failures without losing data.

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