NAS case HDD power cable failure (buck failure)
#1
This is a heads up really.

I noticed my drives were spinning up for no reason over the past week, on investigating the problem I found that one of the drives wasn't responding to commands and was marked as damaged in the ZFS pool. I thought it was the drive. After getting a replacement, the replacement drive didn't show up. Odd. After some messing about I tried the power cable from HDD0 and HDD1 then span up.

So the culprit in this case was the twin SATA power adapter that comes from the board, on each path it has something like an MP1584EN encased in heatshrink which converts the 12V to 5V for one of the SATA pins. Upon inspection this was outputting 3V.

I've ordered a replacement buck, hopefully one that has a bit more longevity.

So if you think a drive has failed on your NAS case, might want to check that first.

Ashley
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#2
(03-31-2022, 11:42 AM)ashleymills Wrote: This is a heads up really.

I noticed my drives were spinning up for no reason over the past week, on investigating the problem I found that one of the drives wasn't responding to commands and was marked as damaged in the ZFS pool. I thought it was the drive. After getting a replacement, the replacement drive didn't show up. Odd. After some messing about I tried the power cable from HDD0 and HDD1 then span up.

So the culprit in this case was the twin SATA power adapter that comes from the board, on each path it has something like an MP1584EN encased in heatshrink which converts the 12V to 5V for one of the SATA pins. Upon inspection this was outputting 3V.

I've ordered a replacement buck, hopefully one that has a bit more longevity.

So if you think a drive has failed on your NAS case, might want to check that first.

Ashley

To follow up on this, I just replaced the buck and everything works fine now.
  Reply


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