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Cache disk SMART warning

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I logged in today just to see these two messages:


Unraid Cache disk SMART health [197]: 11-09-2019 11:47
Warning [TOWER] - current pending sector is 1
CT1000MX500SSD1_1922E2086346 (sdb)

Unraid Cache disk SMART message [197]: 11-09-2019 12:17
Notice [TOWER] - current pending sector returned to normal value
CT1000MX500SSD1_1922E2086346 (sdb)


I ran the SMART check but it came back normal.


How worried should I be?


Many thanks


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Known firmware issue with that specific series (MX500) of Crucial drive.


How worried? In isolation, it's fine. However, it is dangerous in the sense that you will either need to set the system to no longer alert you to the issue, or get bombarded with false alerts. Either way, it's the boy who cried wolf. If the drive actually starts having issues you won't notice as readily.


I don't know of a fix that doesn't involve ignoring the error.

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Disable that attribute just for the cache drive, SSDs usually don't really get pending sectors anyways, but you want to keep monitoring your disks.

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4 hours ago, johnnie.black said:

SSDs usually don't really get pending sectors anyways

Yeah, except when they do.


I very recently had a CT480BX200SSD1 fail on me, and a couple months before it died completely it started kicking pending sectors followed by reallocating them. As long as you don't ignore a rising reallocated count I guess it would be ok to ignore pending.

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Yeah, it's a shame Crucial doesn't fix this, I read in another forum some bulshit answer from their support saying it's normal, but in that case every other Crucial SSD should have the same issue and they don't.

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