Why I'm Usually Unnerved When Modern SSDs Die on Us (utoronto.ca)

Chris Siebenmann, a Unix Systems Administrator at University of Toronto, writes about the inability to figure out the bottleneck when an SSD dies: 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. With spinning HDs, drives might die abruptly but you could at least construct narratives about what could have happened to do that; perhaps the spindle motor drive seized or the drive had some other gross mechanical failure that brought everything to a crashing halt (perhaps literally). SSDs are both solid state and opaque, so I'm left with no story for what went wrong, especially when a drive is young and isn't supposed to have come anywhere near wearing out its flash cells (as this SSD was).

(When a HD died early, you could also imagine undetected manufacturing flaws that finally gave way. With SSDs, at least in theory that shouldn't happen, so early death feels especially alarming. Probably there are potential undetected manufacturing flaws in the flash cells and so on, though.) When I have no story, my thoughts turn to unnerving possibilities, like that the drive was lying to us about how healthy it was in SMART data and that it was actually running through spare flash capacity and then just ran out, or that it had a firmware flaw that we triggered that bricked it in some way.

Comments

What a Load of Drivel

[EndlessNameless]

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.

Who the hell cares? Replace it and restore your data. Leave the story-telling to Stephen King.

When a HD died early, you could also imagine undetected manufacturing flaws that finally gave way. With SSDs, at least in theory that shouldn't happen, so early death feels especially alarming.

Painfully wrong. Every time a new semi process comes out, everyone frets about yields. Yields = silicon without detectable defects.

Anyone who works in manufacturing knows that EVERY process has potential defects. Usually, there are several potential defects, each with its own unique cause.

When I have no story, my thoughts turn to unnerving possibilities, like that the drive was lying to us about how healthy it was in SMART data

Then stop daydreaming about the personal lives of your SSDs and do your damn job. If a hard drive failure causes a serious problem anywhere in your environment, you are the root cause.

Even mechanical drives can die without warning. Sometimes they would give you a warning, but they could just as easily go silently.