August 17, 20169 yr Noob warning! I recently did a fresh install of v6 (I was previously on v5) and did a rebuilt from the parity drive. Initially everything seemed to be going well, but now I can't start the array because 4 of my 11 disk aren't accessible. This sounds suspiciously like a bad controller or bad cabling, but I don't know how to even begin to identify it. FWIW, this problem also seemed to arise at the same time I tried to convert the drives to XFS, though I'm aware that may coincidental. I've attached what I hope to be a helpful log, but interpreting it is above my pay grade. Does anyone have any insight that would be helpful? <Insert witty/informative/insightful signature here> EDIT: Looks like it was the controller going bad. I installed a new one and the all drives are now accessible. Thanks for the help, everybody! syslog.txt
August 17, 20169 yr Community Expert Are all 4 disks on the same controller? or same mini SAS cable? if yes start there.
August 17, 20169 yr Community Expert I've attached what I hope to be a helpful log, but interpreting it is above my pay grade. Does anyone have any insight that would be helpful? More helpful would be to go to Tools - Diagnostics and post complete diagnostics zip. It includes syslog and a whole lot more. On V6+ you should always give us the diagnostics zip instead of just the syslog.
August 17, 20169 yr Author Thanks, Johnnie. I've shut down the machine and made sure card and cable are seated well. At first I thought it might be an issue with the controller cables since it looked like the problem drives were all attached to Ports 4-7 (there are two cables outputs on the controller leading to Ports 0-3 and Ports 4-7). However, after rebooting and reloading the UnRAID interface a few times, I noticed that the drives that were "missing" were changing, and it doesn't look like they're in the same "family" or ports from the controller. FWIW, there is one drive that is consistently getting a Red X but has never gone "Missing", so I guess it's just bad and I'll replace it. The problem is I can't start the array at least one or two of the other drives show as straight up missing, even though they may show as green the next time I reboot the machine. I am scared to death of losing data here. My only two comforts right now are 1) I appear to only have one consistent faulty drive and 2) I know this community has pulled people out of tighter jams than mine. So what's my next step, and is there anything I should avoid completely to prevent losing any data during this troubleshooting process?
August 17, 20169 yr Author As trurl suggested, I'm attaching my complete Diagnostics zip. tower-diagnostics-20160817-1340.zip
August 17, 20169 yr Author I should also note that the number of "missing" disks has fluctuated between 2-3 with each reboot, and they're usually not the same disks.
August 17, 20169 yr Author I don't have another power supply, but I can get one. Would that cause the controller to randomly not recognize disks? Or is it the power supply not being able to supply enough power to reliably keep all the disks "accessible"? Also, it appears that the drive that are hooked up directly to the motherboard are all operating fine. What's the best way to test this? Can I just swap the bays for a couple of drives without risking data loss? On a more generic note, is there anything I can do (within reason) that will cause data loss as long as I don't start the array?
August 17, 20169 yr Community Expert Your data should be fine, it's almost certainly a hardware issue, controller or power supply would be my first guesses, you could try swapping places between the onboard and controller disks, if all missing disks are still on the controller then it's probably a bad controller, otherwise the PS would be my main suspect.
August 17, 20169 yr Community Expert ...Or is it the power supply not being able to supply enough power to reliably keep all the disks "accessible"?... What is the exact model of your power supply?
August 17, 20169 yr Author ...Or is it the power supply not being able to supply enough power to reliably keep all the disks "accessible"?... What is the exact model of your power supply? It's a Corsair vx550w.
August 18, 20169 yr Author ...Or is it the power supply not being able to supply enough power to reliably keep all the disks "accessible"?... What is the exact model of your power supply? It's a Corsair vx550w. Is that enough juice for 11 drives, a controller, a motherboard, and a half-dozen fans of varying sizes encased throughout?
August 19, 20169 yr Author Looks like it was the controller going bad. I installed a new one and the all drives are now accessible. Thanks for the help, everybody!
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