What is UDMA_CRC_Error_Count (ID 199) associated with?

• A. CRC errors from cable or interface issues.
• B. Drive overheating.
• C. Power-on hours.
• D. Wear leveling count.

Answer: (A)

The main idea here is that UDMA_CRC_Error_Count is a SMART metric that tracks CRC (cyclic redundancy check) errors occurring on the Ultra DMA data transfer path between the drive and the host controller. A rising count points to problems with the data cable or interface itself—things like a bad or loose cable, poor connections, or electrical interference—rather than issues inside the drive. The other options relate to different aspects of drive health (temperature/overheating, total power-on hours, or wear leveling) and do not reflect CRC errors on the data interface. If the CRC error count is high, inspect and replace the data cable, reseat connectors, and reduce potential interference on the bus.