

I recently started setting up home server on Raspberry Pi 5. Having issues with raid1. I have 2 nvme PCIe gen 4 SSDs. There was power outages while writing. Now second disk keeps randomly falling. Though, I’m not sure if that’s the reason because I don’t know what was raid status before outage, also disk passes checks. First time it degraded, it tried to recover and it failed. I removed that disk from raid, recreated partition run some test using nvme-cli. Disk looked healthy. I re-added disk, rebuild started and completed successfully. Then I’ve written around 500Gbs of data and it degraded again. At that point I took a break.
There are two things I’m yet to try:
- Change configs to use gen 2 PCI, currently it’s set to gen 3, but AFAIK pi 5 does not support gen 3 officially.
- Remove, format and write data to problematic disk directly. I hope this will give me an idea is this hardware issue or software issue
I’m frustrated and will appreciate any hints.


Infrastructure is there to be used by apps/services. It doesn’t matter how it’s created if infrastructure across providers does not provide same API. You can’t use GCP storage SDK to call AWS s3. Even if API would be same, nothing guarantees consistent behavior. Just like JPA provides API but implementations and DBs behavior are inconsistent