EMC Proven Professional – Technology Architect — Question 21

Which RAID type uses parity to protect against data loss?

Answer options

• A. RAID 3
• B. RAID 0
• C. RAID 1
• D. Nested

Correct answer: B

Explanation

RAID 0 does not use parity; it focuses on striping data across multiple disks for improved performance without redundancy. RAID 1 mirrors data for redundancy but does not involve parity. RAID 3 uses dedicated parity but is not the correct answer as it doesn't represent the primary RAID level often associated with parity, which is typically RAID 5.