Why I’m Usually Unnerved When Modern SSDs Die on Us
Like most of the SSDs deaths that we’ve had, this one was very abrupt; the drive went from perfectly fine to completely unresponsive in at most 50 seconds or so, with no advance warning in SMART or anything else. One moment it was serving read and write IO perfectly happily (from all external evidence, and ZFS wasn’t complaining about read checksums) and the next moment there was no Crucial MX300 at that SAS port any more. Or at least at very close to the next moment.
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What unnerves me about these sorts of abrupt SSD failures is how inscrutable they are and how I can’t construct a story in my head of what went wrong.
