SSD health percentages shown in tools like CrystalDiskInfo only reflect how much of the drive's rated TBW lifespan has been consumed — they don't capture actual physical degradation or read/write errors. The real indicators of drive health are S.M.A.R.T. metrics like Media and Data Integrity Errors, Critical Warning, and Number of Error Information Log Entries. Any non-zero value in Media and Data Integrity Errors means ECC has failed to recover errors, signaling serious cell degradation regardless of the health percentage shown. Recommended actions include backing up data immediately, attempting a firmware update, and replacing or RMA-ing the drive if errors persist.

6m read timeFrom xda-developers.com
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Your SSD's S.M.A.R.T. data records nearly everything about itA "healthy" drive can still hide severe read/write errorsWhat should you do if your SSD is failing?
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