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Multiple HDDs in a RPi5 vanish (kbin.social)

submitted 8 months ago by Norgur@kbin.social to c/selfhosted@lemmy.world

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Hey, I'm really stumped by this issue so perhaps one of you folks might be able to help me out here. I run a little server on an RPi 5.i got for another project originally. So ce I cannot finish said project due to time constraints, I repurposed the thing into a little server. It's running smoothly so far with one really weird exception. Whenever I attach more than 1 HDDs to the pi and use at least 2 at the same time, both HDDs will start to fail, unmount and the whole USB hubs I connected them to will just disappear from LSUSB. Originally I thought this was a power issue but the weird behavior continues when I connect each HDD to it's own powered USB hub. I'm really at a loss as to what's happening. Any ideas?

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[–] Lemmling@lemm.ee 1 points 8 months ago

I faced the same problem when trying to run two SSDs connected via USB in btrfs raid0. I used a cheap 30W power brick from amazon. You can see dmsg warnings about this. Look for low voltage/current. Problems were resolved after using the official Raspberry 5 power brick.