I have some 10+ crucial ssds spread across our company and I'm also recommanding crucial ssd to everyone, but now my confidence is shaken, and I'm "bit" concern.
I would not be concerned. I've seen every major brand of SSD die a quick and unexpected death with no warning signs of a pending failure. I've had a few which came back to life after sitting unpowered two or three years. Yours is the first one that I've heard about which failed after being without power for an extended time. Since an SSD can come back to life after being unpowered for an extended time, it doesn't really surprise me the opposite is also true. The firmware for all SSDs still need some work to address the unexpected states these SSDs can encounter. IMHO an SSD should always be able to communicate with the host and provide an error code/message no matter what even if it cannot access the data.
The first SSDs our organization used were not Crucial SSDs and the failure rate I saw with those were 75%. Half would just stop communicating and the other half would have unknown intermittent issues. The technology was still so new at the time there was no good information about SSD behavior and those non-Crucial SSDs didn't even have SMART data to access until a much later firmware. I was finally able to convince my boss to allow me to use Crucial SSDs and all our problems disappeared. Some of the issues we encountered may have been from OS issues because the surviving drives magically stopped failing without having their firmware updated. At the time TRIM was not an option. That experience really made me doubt the reliability of SSDs in general, but I'm all for them now as long as good verified working backups are used.
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