Multiple choice technology architecture

Which of the below does not contribute to performance improvement in disk drives

  1. RAID 0

  2. RAID 1

  3. RAID 10

  4. RAID 5
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

RAID 0 improves performance through striping (distributing data across disks). RAID 10 combines striping with mirroring for both performance and redundancy. RAID 5 uses striping with distributed parity for improved read performance. RAID 1 (option B) is pure mirroring - it writes the same data to two disks, providing redundancy but no performance benefit (in fact, it has a slight write overhead). RAID 1 is the correct answer as the one that doesn't contribute to performance improvement.

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