Electronics > Repair
Can someone help identify these caps?
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phlegeton:
Okay thanks for the informative articles! So that scenario is not possible and can take it of the list :-)
fzabkar:
If a drive doesn't spin up, I can help you to narrow down the fault. Just upload a photo of the PCB. Otherwise, here is another tutorial:

HDD / SSD power supplies:
https://www.hddoracle.com/viewtopic.php?f=59&t=231
phlegeton:
I still have to test all the failed drives. But when the drives failed, they were all spinning. But if a drives fails to spin, I now know where to look for. So thx again!
fzabkar:
If they're spinning but cannot be detected, that's usually an internal fault. Typically it's a bad head or a damaged firmware module, or both. It's not something that would occur simultaneously on multiple drives. It could be that you have a RAID which was running in a degraded state and only became noticeable when the last drive failed.
phlegeton:
What happened is that suddenly 8 drives in a RAID6 array failed (slots 1,2,3,4,5,6,7,8) While these 8 drives failed, the other 8 drives in the another RAID6 array (but in the same storage pool) just kept working. (of course the storage pool itself was not) The 8 drives failed with a unrecoverable error. But the drives where still spinning, and I could look at the S.M.A.R.T status etc.   

*edit* Both the arrays were healthy before the drives failed.
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