Investigation about read errors on my SSD Definitely more than a year ago I replaced the internal 1TB Apple SSD in my MacBook Pro (Retina, Mid 2015) with a Samsung SSD 970 EVO 2TB unit (and an adapter). Quick story, no problem so far - SMART stats say 47TB data unit reads and 27TB data unit writes.
Since a couple of days I'm seeing some sporadic failure in reading a few files. SMART &quot;Media and Data Integrity Errors&quot; count has increased. The problem is sporadic because if I test the file that triggered the error (e.g. by computing a MD5 from command line) I see &quot;Device error&quot; at first, but it then becomes ok after retrying.
Is it possible to understand how serious is it?
End of the story: Samsung acknowledged that the unit was defective and replaced it under warranty.