CompTIA Security+ (SY0-501) — Question 685

A junior systems administrator noticed that one of two hard drives in a server room had a red error notification. The administrator removed the hard drive to replace it but was unaware that the server was configured in an array. Which of the following configurations would ensure no data is lost?

Answer options

• A. RAID 0
• B. RAID 1
• C. RAID 2
• D. RAID 3

Correct answer: B

Explanation

RAID 1 is designed for redundancy by mirroring data across two drives, ensuring that if one drive fails, the other can still provide the data. RAID 0, on the other hand, stripes data without redundancy, meaning if one drive fails, all data is lost. RAID 2 and RAID 3 are less common and also do not provide the same level of data protection as RAID 1.