Which of the following best describes a high Reallocated Event Count?

• A. Rising pending sectors.
• B. Multiple incidents of bad sector detection.
• C. Frequent spin retries.
• D. High CRC errors.

Answer: (B)

A high Reallocated Event Count happens when the drive has to relocate data from sectors that have become unreadable to spare sectors. Each time the firmware detects a bad sector and remaps it, that event is recorded, so repeated bad-sector detections push the count up. Among the options, multiple incidents of bad sector detection best describes why reallocations occur, since each detection can trigger a remapping to a spare area. Rising pending sectors are related but not the actual remapping events, spin retries point to read/spin problems rather than remapping, and CRC errors relate to data integrity on the transfer rather than sector reallocations.