I woke up to the following error:
Current alerts:
* Pool VENUS state is ONLINE: One or more devices has experienced an
unrecoverable error. An attempt was made to correct the error. Applications
are unaffected.
* Device: /dev/da6 [SAT], ATA error count increased from 0 to 2.
I’m not super concerned about the data for now, since the pool is a single vdev with a mirror and a spare.
My question is: what should I do? The disk does not seem to be failing, can I keep using it? Should I resilver it to make the error disappear?
Personally, I just leave it as-is for a few weeks and see if the number increases. If it doesn’t, I’ll replace it with a spare good drive, run it through HDD Sentinel, and put it back on the shelf for rotation.
If you don’t have spares sitting around, I’d personally just buy a spare, ignore the error, and monitor it for any increases.
Ah, now I have 144 reallocated sectors though, so I know where this is going
Yeah I would buy a replacement immediately if I didn’t already have one (I always do), and begin working the warranty if possible.
It’s an old disk, ran out of warranty. It died today after a couple of days of agony 
On the bright side, you were there when it failed.
My last two disk faults happened while I was in another country. Have hot spares on every pool now…
Sounds like you at least got your moneys worth out of it.
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That’s terrifying and a good callout. I should have a spare hanging around in the server just for that.
Thank you for helping navigate the experience
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