SK0-005: CompTIA Server+

By CompTIA · Question Mode

QuestionQ18

Security and disaster recovery

A database server recently had a drive fail. Because the drives are large (8 TB), rebuilding the RAID 5 array took an excessive amount of time. Which of the following RAID methods would guard against additional drive failures during rebuilds at the lowest cost?

Explanation

RAID 6 uses dual parity, allowing the array to tolerate two drive failures. Its parity-based design requires less redundant capacity than RAID 1 or RAID 10 mirroring, while RAID 0 provides no fault tolerance. Microsoft documents that RAID 5 tolerates one drive failure and RAID 6 tolerates two.

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