The question is about understanding a failure or fault of an SSD drive that is not total, and not predicted or visible in SMART.

The FAQ for Server Fault says: "Server ... hardware, software ... Operations, maintenance, and monitoring". I believe the question fits these categories.

I'm not asking so much about a specific device or model, but whether the problem is repairable (using knowledge of SSDs outside my understanding) or predictable (using knowledge of SMART outside my understanding).

Please can you help me rephrase my question so that it's not considered off-topic?