220-1201 · Question #413
220-1201 Question #413: Real Exam Question with Answer & Explanation
The correct answer is D: RAID 6. RAID 6 is the RAID level that uses double parity, allowing the array to survive the failure of two drives simultaneously. RAID 6 stripes data across all disks like RAID 5 but stores two independent sets of parity information, making it far more fault-tolerant. RAID 0 has no parit
Question
Which RAID type offers double parity?
Options
- ARAID 0
- BRAID 1
- CRAID 5
- DRAID 6
Explanation
RAID 6 is the RAID level that uses double parity, allowing the array to survive the failure of two drives simultaneously. RAID 6 stripes data across all disks like RAID 5 but stores two independent sets of parity information, making it far more fault-tolerant. RAID 0 has no parity and provides only performance. RAID 1 mirrors data but uses no parity. RAID 5 uses single parity and can tolerate only one disk failure. Because the question explicitly asks for double parity, only RAID 6 is correct.
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