If SMART logs show pattern of errors concentrated at higher LBA addresses that increases over time, what does this indicate?

• A. Errors are random and non progressive.
• B. The entire disk is failing at once.
• C. A specific disk region is failing and may worsen.
• D. The cache is the primary source of errors.

Answer: (C)

When SMART logs show errors clustered in a specific range of logical block addresses that increases over time, it points to a failing region on the disk. LBA maps to particular sectors, so a concentration of faults in the higher addresses means those sectors are becoming unreliable. As writes and reads continue, wear or defects in that area cause more errors, demonstrating progressive degradation in that localized spot. This is different from errors that are random and non‑progressive (which would lack a clear pattern or trend), from a disk-wide failure (which would show widespread errors across many areas), or from cache-related issues (which would not map to a particular disk region). In short, a start of a failing region that may worsen is the most consistent interpretation. Back up data and plan for drive replacement or further targeted diagnostics.