AWS Certified Solutions Architect – Professional — Question 369

When I/O performance is more important than fault tolerance, which of the following configurations should be used?

Answer options

• A. SPAN 10
• B. RAID 1
• C. RAID 0
• D. NFS 1

Correct answer: C

Explanation

RAID 0 utilizes disk striping to distribute data across multiple drives, significantly boosting read and write performance because operations can occur in parallel. However, it provides no fault tolerance, meaning a single drive failure results in complete data loss. RAID 1 focuses on redundancy through mirroring, while SPAN 10 and NFS 1 are not suitable choices for maximizing raw storage performance over safety.