A technician is installing a pair of 7.2K rpm hard drives into a NAS unit. Which of the following will provide the HIGHEST levels of performance for the setup?

The correct answer is D. RAID 10. The exam answer is RAID 10 because it combines striping (RAID 0) for performance and mirroring (RAID 1) for redundancy, making it the highest-performing fault-tolerant RAID level. However, note a technical discrepancy: RAID 10 normally requires a minimum of four drives, and RAID

Hardware

Question

Options

ARAID 0
BRAID 1
CRAID 5
DRAID 10

How the community answered

(30 responses)

A
10% (3)
B
3% (1)
C
3% (1)
D
83% (25)

Explanation

The exam answer is RAID 10 because it combines striping (RAID 0) for performance and mirroring (RAID 1) for redundancy, making it the highest-performing fault-tolerant RAID level. However, note a technical discrepancy: RAID 10 normally requires a minimum of four drives, and RAID 5 requires at least three. With only two drives, only RAID 0 and RAID 1 are truly applicable, and RAID 0 would yield the best raw performance. For CompTIA exam purposes, RAID 10 is recognized as the top performer overall, and this question tests conceptual RAID knowledge rather than strict drive-count constraints.

Topics

#RAID#Storage performance#NAS#Hard drives

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