May 7, 20179 yr Afternoon all, I have been running Unraid 6.X since it's release and I love it. Recently though I notice my Disk 1 showed some errors. I run a parity check every Sunday night and the last check was completed without errors. I ran the short SMART test on the disk in question and it passed. I ran the extended test, but it did not pass. It told me to view the error log. I downloaded the error log, which I have attached here and I have also included the Unraid Diagnostic report also. From what I can see, the last error was about 250-300 hours ago. Some info about the disk in question though... It has been the most used disk in my setup. I have 4 x WD 4TB Digital Reds in my build. 1 is Parity obviously, the other 3 with data on them. That said, disk 3 is completely empty at the moment. So my questions are this please: 1. Should I be worried about the Disk 1 with those error messages? 2. Should I move the data from disk 1 over to disk 3(empty disk) and perform a preclear on the drive with the errors? 3. If the preclear sorts out the disk.... how reliable will that disk be in the future? (I realise that is a hypothetical question - I'm more after your opinion. Should I simply bin the drive etc) Many thanks for your time guys. Much appreciated. Kind regards, Morten unraid_server-diagnostics-20170507-1208.zip unraid_server-smart-20170507-1216.zip
May 7, 20179 yr 1 hour ago, mort78 said: 1. Should I be worried about the Disk 1 with those error messages? Yes, disk failed the extended SMART test three times with a read error, IMO it should be replaced, you can also try running a few preclear cycles on it to try and fix but it depends on how adventurous you are with your disks/data.
May 7, 20179 yr Author 3 hours ago, johnnie.black said: Yes, disk failed the extended SMART test three times with a read error, IMO it should be replaced, you can also try running a few preclear cycles on it to try and fix but it depends on how adventurous you are with your disks/data. Many thanks for your reply Johnnie. I have started to move all the info on disk 1 to disk 3. It's taking a while. But that's of no concern. I purchased all 4 of those drives at the same time. They aren't even 2 years old yet. Thought the WD Reds would hold up a little better than that personally. I will go and grab a replacement tomorrow. Maybe even a second replacement so that I have one on hand in the event another decides to go. Just so I'm clear.... if this drive was to fail outright, if I connected a new drive to the array, the parity would recover the data on the failed disk??? Lastly, once I have copied over this data, to disable this hdd: I stop the array, I unassign it, Start the array, Stop the array, Pull out the defective disk and connect a new one, Assign the new drive to Disk 1 (Old drive) Start the array. Anything else required? Sorry for all the questions. This is the first time anything has happened to my array, so this is all a little foreign to me. Again, many thanks for your time. Kind regards, Morten
May 7, 20179 yr 5 minutes ago, mort78 said: Just so I'm clear.... if this drive was to fail outright, if I connected a new drive to the array, the parity would recover the data on the failed disk??? Yes 6 minutes ago, mort78 said: Lastly, once I have copied over this data, to disable this hdd: I stop the array, I unassign it, Start the array, Stop the array, Pull out the defective disk and connect a new one, Assign the new drive to Disk 1 (Old drive) Start the array. Some unnecessary steps, this is enough: power down replace disk power up assign new disk and start array to begin rebuild
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