german_plz

OK, the array looks good now. Hopefully the data fine. Thx for the help.

biggie-diagnostics-20251124-1116.zip

Yes, but they do need a rebuild - I had to rebuild those before, and when I started it, disk 5 instantly became error disabled. It finished with 794882269 errors. The content on disk 5 looks fine. Which is why I don't get why I can't just enable the drive again. So in my head, if I can turn disk 5 active again and run a correcting parity check, there will be no data loss / corruption at all. For clarity's sake, I do think the firmware on my SMR drives is to blame for the repeated read errors that come up out of nowhere, even though the SMART statistics look fine...

biggie-diagnostics-20251123-1131.zip

Sorry for the late replay. There is no usable data on Disk 4 and 6. To prevent data loss, is there a way to enable disk 5 without reinitializing it?

There are 3 SATA power connectors on the PSU cable, and with a few adapters, you can make it work. It's not smart, I know, but I don't want to mix or buy other third-party cables. Because even the same manufacturer can have a different connector (on the PSU side) on the different models: https://www.youtube.com/watch?v=SDsC_PNo84I&t=35s I will buy a new PSU and check if the issue still occurs, and if it does, I will change out the data SATA cables. Do you think after a parity check all data will be restored with no errors? Thank you for the help ❤️

All 8 HDDs and 8 SATA SSDs are on one 6-pin on the PSU. Bought the PSU secondhand, and I don't have any cable for it. (seasonic prime titanium 650w) You think this is a Problem?

Yes, Disk 4 and 6. It took about 18 hr and 35 min, about the usual time to complete. I have not touched the server in a long time, but I will check the connection. Now that you mention this, it's always disks 4, 5 and 6. This time, all three at once. You are probably right with cables being the issue. In the server is an LSI SAS 9207-8i; to be sure, I will buy new mSAS to SATA cables. The SMART attributes always looked good; that's why I never changed the drives. I had these issues in the past; that's why I unassigned those and reassigned them immediately, and it always solved the issue:

I have 6 data disks and 2 parity drives. 2 of the data disks were error disabled, so I unassigned those and reassigned them to activate them. While the rebuilding was in place, a third disk began to give read errors. --> "Data-Rebuild finished (794882269 errors)" What would be the best steps to verify what data is lost or corrupted? The diagnostics File: biggie-diagnostics-20251019-1530.zip

I had a Hardware failure recently where my CPU or Board died, since then I replaced both. Now the problem is that all my pool devices are unassigned: What would be the best way to restore the pools without losing data? The diagnostics File: biggie-diagnostics-20241124-1110.zip The zpools look fine: Can I import the zpools and Unraid will detect them as the right pools and assign the devices accordingly? I would import them with: zpool import -a Any help is appreciated! I may be a bit overly cautious since I do not want to lose any data...

I tested the GPU in a Windows system and it works fine. Booted from an Ubuntu live stick with no drives connected (no SAS-Card ether) and the system still crashes. So you are right that it is either the CPU or board. I remounted the CPU and cooler because I heard the TR4 Socket can be finicky. Didn't fix it. I will buy a used motherboard / CPU combo on marketplace to replace and test my current hardware. Strange that server just killed itself My PC died a few days after, not the best timing… Thank you @JorgeB for the troubleshooting help! Really didn't think it was a hardware problem at first because it ran fine before.

OK, I think RAM is not the issue. I tried both pairs three times, but the server crashed every time (always at a different point) Also tried completely different RAM, just one stick, and the server crashed with that RAM too. Can a GPU or SAS-Card also create these crashes? That's the only other components in there, except the Drives. I'll be able to try a different mainboard and CPU combo tomorrow to see if that's the problem. Can I just switch out the components, or does unraid have a problem with that?

I have now installed just 2 out of 4 Sticks and Memtest is running again. Will run both pairs for 24h and see if errors occur. In my BIOS there are no settings for the C-States and other Power Control settings or similar. The BIOS is on the newest version. The RAM is not over overclocked, running at its native speed 2133MHz.

I ran Memtest last night for a sanity check because of the hardware errors:

Thx for the replay! Does the md driver crashing indicate that a drive has faild? Or just a general hardware error? I'm having a hard time finding any devices that are not showing up in the current stat of the server.