CompTIA Server+ (SK0-004) — Question 66

A network technician is replacing a failed drive in a RAID 5 array. Over time, access to the volumes in the array has slowed down. The technician wants to increase the speed of the RAID array and chooses to replace the 10000rpm SAS drive with a low-latency SSD drive. Which of the following is the problem with this solution?

Answer options

• A. SSD drives cannot be used in RAID arrays
• B. Performance will not be increased
• C. SAS drives are faster due to their high spindle speed
• D. All the drives in the RAID array must be replaced simultaneously

Correct answer: D

Explanation

The correct answer is D because in a RAID array, especially RAID 5, all drives should ideally be of the same type and specifications to ensure consistent performance and reliability. Replacing just one drive with a different technology like an SSD can cause performance issues and inconsistencies. Options A, B, and C are incorrect because SSDs can be used in RAID, performance can actually improve with SSDs, and SAS drives are not inherently faster in all scenarios due to spindle speed alone.