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SO I followed those steps as listed in the WIKI and it worked, the drive is back on line with no errors. Actually I decided to kill two birds with one stone, since I had to run a parity sync, and decided to remove the 2 2TB drives at the same time and do a new config. About 12 hrs later it was done and so far so good. Next, I will be upgrading to a larger CACHE drive and then a second one for redundancy...fingers crossed... Thanks again Johnnie for your help...

Thanks, I should have checked there first :). I will follow those steps tonight. Thanks again Rick

Thanks Johnnie for the response. Last night I swapped the cable and no longer were there any read errors, but the drive was still disabled and I couldn’t see how to enable it. Well preforming a parity sync allow me to enable to drive? Or is this something else I have to do to enable it first? thanks

I shut the server down and check/reseated all the cables. Started it up (took longer to boot up than it usually does). There are no more read errors but the drive is still disabled. Not sure what to check now.

Hello folks, I have been moving things around on the unraid server over the last few days, rearranging my data on disks using gather on unbalance with the goal to remove my 2 2TB drives to my backup. everything was going great until this morning I got an email from the server indicating one of my drives has read errors. It is one of my parity drives. I ran the SMART extended self-test and it completed without errors. I don't understand everything in the SMART reports but from what I have gathered the following indicates the drive is still good? 5 Reallocated_Sector_Ct PO--CK 100 100 005 - 0 196 Reallocated_Event_Count -O--CK 100 100 000 - 0 197 Current_Pending_Sector -O---K 100 100 000 - 0 I could be wrong. I have posted my diagnostics (tools -> diagnostics), hoping someone could take a look and let me know if the drive is toast, or what else could be causing the problem. For now I am going to shut the server down and try changing the cable... Thanks in advance. Rick thevault-diagnostics-20200211-2228.zip

hi trurl... thanks for the reply. I was trying to run the USB drive temporarily to replace the dead drive (disk 2) in the array so I could upgrade the parity’s to 3tb and then replace the USB drive with one of the 2tb parity drives. Is this not possible or advisable? well the disk started make clicking noises and Unraid sent out a lot of alerts indicating there were a lot of errors and eventually Unraid removed it from the array. yes, I realized that now:). I would love not have to spent money on a 2tb drive, but it appears like I may not have a choice. thanks

Hello folks. Here is the situation. Running 6.8.1 Drives parity 1 - 2tb Parity 2 - 2tb disk 1 - 2tb disk 2 - 2tb disk 3 - 2tb disk 4 - 2tb disk 5 - 1.5tb Cache drive - 240gb SSD Yesterday my disk 2 died. I found a better deal for 3TB drives than 2TB, plus I want to increase capacity, kill 2 birds with one stone. From my understanding the replacing drive has to be the same size or larger, also the largest drive has to be a parity drive. I had a 2TB USB drive that I precleared and tried to add to disk 2, but got the message that the drive is too small?? How can I do this with 2 3TB drives? do I have to purchase a 2TB drive? I would really hate to waste money on a 2TB drive, when I can get a better deal on a 3TB. Sorry I am not very technical and I got lucky when I set this up that it came together without any problems and has been running problem free. Any help would be greatly appreciated. Thanks Rich