Multiple choice technology architecture

Which of the following provides fault tolerance for n drives without requiring 2*n drives

  1. Parity

  2. Striping

  3. Mirroring

  4. Clustering
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A Correct answer
Explanation

Parity in RAID systems (specifically RAID 5) provides fault tolerance by calculating and storing parity information across multiple drives. If a single drive fails, the parity information allows the data to be reconstructed without requiring a full mirror copy. Mirroring requires 2*n drives (complete duplication), striping provides no fault tolerance, and clustering provides high availability but not drive-level fault tolerance through parity.

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