Which statement best describes SMART's role in disk maintenance?

• A. Proactively monitoring and reporting potential disk failures to allow preemptive replacement
• B. Automatically replacing failing disks without user intervention
• C. Encrypting disk data and managing keys
• D. Scheduling regular backups

Answer: (A)

SMART is about watching disk health and giving early warnings before a drive fails. It continually checks various disk attributes—things like reallocated sectors, pending sector count, spin-up time, read error rate, and other reliability indicators—and reports when values look abnormal. That proactive visibility lets administrators plan a replacement before a failure occurs, reducing surprise downtime and data loss.

This matches the idea of proactively monitoring and reporting potential disk failures to enable preemptive replacement. SMART itself doesn’t automatically replace disks, encrypt data, or schedule backups. Automatic replacement would depend on other systems or processes, encryption is a separate function, and backups are a separate data protection task.