November 20, 20241 yr Fairly new to Unraid, but today it looks like maybe one of my drives (Disk 4) is having issues and is now disabled. I don't see any SMART errors though. I'm attaching the diagnostics file, but if I was trying to determine the problem myself, what should I be looking for? Is there a flow diagram or list of steps for how to troubleshoot on my own? Does the drive need to be replaced? or what exactly do I do now? Thanks! unraid-diagnostics-20241120-1308.anon.zip Edited November 20, 20241 yr by kelliott_72
November 20, 20241 yr Community Expert Solution Well its a usb drive and it dropped offline. Nov 18 07:58:39 unraid kernel: usb 2-1.1.2: reset SuperSpeed Plus Gen 2x1 USB device number 6 using xhci_hcd since then its spamming the log with errors and then it dropped again Nov 18 07:58:40 unraid kernel: usb 2-1.1.2: reset SuperSpeed Plus Gen 2x1 USB device number 6 using xhci_hcd rinse and repeat Only recommendation is to not use usb drives because of the unreliability Edited November 20, 20241 yr by Mainfrezzer
November 20, 20241 yr Author I guess I didn't mention this and not sure if it matters, but there are 4 drives in a drive bay, they connect internally sata, with a single usb-c connection back to the computer. I would have thought that they would have all gone offline at the same time if the usb connection was unstable, but maybe that's not necessarily true. This is the bay if it makes any difference - https://www.amazon.com/gp/product/B078YQHWYW @Mainfrezzer I appreciate the help!
November 21, 20241 yr Community Expert It does look like a USB problem, please note that USB is not recommended for array or pool devices.
November 22, 20241 yr Author I appreciate the help, I'll definitely plan to move away from my current usb drive bay. FWIW, I checked that all drives were seated properly, checked cable, rebooted and then attempted to rebuild the failed drive. It immediately began throwing errors, so I ended up replacing the drive and it's currently rebuilding and seems happy again. So apparently, even though there were no SMART errors and the logs indicated a USB issue, I feel like this really was a problem with the drive itself.
December 11, 20241 yr Author Well, it appears that you guys were correct, it did seem to be a usb issue. At ~90% complete rebuild, I started seeing the same read errors that the "bad" drive was experiencing. I've since gotten a new case and am no longer using the external usb enclosure. Drive rebuilt just fine. Oh well, guess since the old drive was fine, I now have another one to add to my array . Thanks again @Mainfrezzer and @JorgeB
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