December 15, 20232 yr My worst nightmare culminated this evening. After building out my new unraid server I begun the long process of migrating my data over to the new server. Everything was migrated over and seemed to be running great until my 10TB parity drive suddenly failed. No amount of fiddling was able to bring it back online so I RMA'd the drive and got a fresh one from the supplier. During this time I kept my server powered down to avoid any potential of corruption and issues. After installing the replacement parity drive while the sync was taking place I suddenly lost my largest drive, with 80% of my data. The issue is that there is about 6TB of data that was in the array that once lived on the drives that were wiped from the drives that make up the array. I had not completed my back up array before this took place. So here is where we stand. The 10TB drive that holds 80% of my data spins up and is recognized as a device but is no longer recognized by Unraid as a part of the array. I have the option to Format it (obviously I can not do this) but I can not place it in the array to spin up. During the parity resync it did show a SMART error on a sector, and then suddenly started showing tons of errors. The parity time line then got pushed WAY out (230 days). What hope do I have for getting this drive to jump back online and for everything to work long enough to offload 8TB of data? Where do I begin. I swapped around SATA cables and power connectors without any success.
December 15, 20232 yr Community Expert The 10TB is not even giving a valid SMART report, this is usually a disk problem, but try swapping cables with a different disk and post new diags.
December 15, 20232 yr Author Sorry accidentally attached the wrong file. Here you go. Thank you. themothership-diagnostics-20231215-1143.zip
December 15, 20232 yr Author Ok after some reading and what not, I think I'm coming to the conclusion that I likely need to ddrescue the drive. If there are other things to try first please let me know. I ordered a new 10TB drive. If my research is correct the steps are as follows. 1) Insert the new drive into the server run a SMART test on it. 2) If the test is successful and shows a healthy drive initiate the ddrescue via command and try to recover as much data as possible. Questions: Do I want to create a disk image? If not what is the command to duplicate any recoverable data to the new drive. Once complete, what do I do next? Do I add it to the array in place of the old drive and start it? If I do this will the array function as it has before but with missing or currupted files? Lastly, I no longer trust the drive that I have in there as the parity. This was the replacement drive from the first parity failure. These were refurbished drives... I know, fatal error. If you are reading my thread and shaking you head believe me I know how dumb I was for trying to save a few bucks. Never again. That being said, I may try to send both drives back and get a refund to purchase a second brand new drive to use for parity. They were through Amazon so I should have quite a few days left in my return window. Alternatively, I could also just buy another new drive and toss it in as a second parity. I sort of want two parity drives anyway after all of this. What would you do if you were in my shoes. Thank you for any and all feedback. I am hopeful that I will be able to recover a decent amount of data.
December 16, 20232 yr Community Expert See here: https://forums.unraid.net/topic/46802-faq-for-unraid-v6/?do=findComment&comment=525075
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.