Do SSDs fail differently than HDDs?

• A. Yes — often sudden failure, NAND wear, or controller issues.
• B. No, they fail the same as HDDs.
• C. They never fail.
• D. Only due to software bugs.

Answer: (A)

SSDs fail differently because they use NAND flash memory with a controller, not spinning disks with mechanical parts. Each flash cell can only endure a limited number of program/erase cycles, and wear leveling spreads writes across the drive. Over time, enough cells wear out that blocks become unreadable or data can’t be reliably written, so the drive can fail abruptly. The controller firmware can also develop bugs or encounter power-loss events that trigger a failure, even if the NAND itself isn’t mechanically damaged. In contrast, hard drives fail mainly due to mechanical wear: bearings, motors, heads, and platters deteriorate over time, and failures often relate to physical wear, vibrations, or thermal stress. So, SSDs are more prone to sudden failure from wear-out and controller issues, whereas HDDs fail due to mechanical degradation. The other statements don’t fit because they either ignore these hardware differences, imply perpetual reliability, or attribute failures only to software.