SSD health is about wear, spare area, errors and heat.

Read wear indicators carefully

Different vendors expose wear in different ways. Focus on the interpretation and trend rather than comparing raw values across unrelated SSD models.

Watch spare blocks and media errors

A drive can tolerate some internal block replacement, but shrinking spare area and increasing media errors reduce confidence.

Temperature can throttle or damage reliability

NVMe drives in tight spaces can run hot under sustained writes. A temperature graph helps show whether cooling is adequate for real workloads.

Backups still matter

SSDs can fail suddenly. Health monitoring improves awareness, but it does not replace a verified copy of the data.