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A company's RAID array has degraded performance and a blinking red light on one of the bays. Which of the following should a technician replace?
Correct Answer: A
Step by Step Detailed Comprehensive Explanation with All CompTIA References: Analysis of the Problem: Degraded RAID performance and red light indicate a failed HDD in the array. Option Evaluation: A: HDD: Replacing the failed hard drive restores RAID performance. Correct. B: CPU: Not related to RAID performance. Incorrect. C: PSU: Power issues wouldn't cause RAID degradation. Incorrect. D: RAM: Unrelated to RAID functionality. Incorrect. Reference: RAID troubleshooting is outlined in Domain 5.3.