Waffle

I will freely admit I am no expert. That said, are we sure there is no issue with any of the drive in the array? Unraid only runs as fast as the slowest drive, so if any have bad sectors then that might be an issue. I would start with checking your S.M.A.R.T. data on the drives.

Longer post for those wondering about my highly unusual setup. I had a ransomware attack on my network and they took out everything they could... Well it just happens at the moment they decided to do that I was moving a large number of files over night so I had an active connection to my unraid server via a windows system. Long story short they got everything... A bit of good news though, A friend of mine had a backup (albeit a bit old) of my content. so for the last week my server has been at his house moving 68TB of data back onto my server. Before moving it to his house I removed all dockers, all data on the cache, disabled parity, and cache so the transfer would go faster and basicly set the server to base bones. I got it back today and as a thank you gave him my old sata SSD's I was using as the cache drives. Before I even booted the system in my house I added the new nvme drives. When I tried to re-enable the cache, unraid was having none of it. So, I figured, meh there was nothing on the cache drives anyway so just format it, well that didnt work either. Now I am in need of help... Or perhaps I need to reinstall unraid, but I dont know what that will do to the array. That is a last resort in my eyes anyway.

The title says it but back story. I do not have the old cache drives (there was nothing on my cache drives it was not used at all). I have 3 new shiny drives I want to use instead. but I CAN NOT get unraid to let me use them. I am currently stuck with not being able to lower the cache drive count lower then 3. No matter what I try.... My array is back up and running fine. (currently rebuilding) but for the life of me I can NOT get the stupid cache drives back up. Had i known it was going to be this big of an issue I would have kept the old drives rather then let a friend have them. I have 3 nvme drives I want to run balanced in the cache. When I put them in the 3 slots I get "Unmountable: No pool uuid". When I google that the advice is to set the cache to one drive. However, I can not set it lower then 3, its just greyed out at 3 unless I mount all 3 then I can only go UP and not down to 1. I am pretty sure I am going crazy. Their is NO DATA on the cache so any options that does not mess with the array will be nice Edit - I also have no dockers or shares on this system yet, just a but ton of data on the array Edit 2 - So, it turns out I AM A F*%^ING MORON.... So I all the things I said, but I missed one button.... the "format" button at the bottom..... I just assumed since I formatted it before adding it to the cache it was formatted and didn't even look for that. It pains me to admit this but i seriously just spent 2 hours on this....

Seems Seagate X14 12TB (ST12000NM0038) drives with a LSI00344 9300-8i HBA controller on UNraid v 6.8.3 also does not work, unless I am doing something wrong. I have 11 active and 2 unmounted and is seems they just like spinning lol. I am guessing this is why UNraid does not support this feature natively. As it seems SAS drives do not have it standardized. That's a shame really.

Ok so, I hate to be anti climatic but I just ended up redoing the whole thing with the correct drives in place. (Currently with no parity until the ~50TB is finished moving then I will add them) and its already moving at 200+ MB/s this will only take a few days and I can remove the old/bad/sus drives out and send them back. Thank you sincerely for everyone who had input on this, it was a learning and humbling experience.

so, i decided to start the transfer anyway and i would just watch the drives to see what one was getting full. Well it turns out they were ALL getting full. It seems they are all running as copies of each other. It is looking like it might just be faster to start the array over and move the files. If I dont have a parity drive then will it copy faster? Then add the parity drives after?

Great, I can see 'disk#' ! However when I go into 'disks' it only has one drive and not the 11 that i have "unassigned". Thank you again for helping with this. I seem to always have the weirdest issues when I try to do thing.

Here is the information you requested. I looked in the '/media' folder and did not see the drives in their as well. Included is a picture of that folder.

I am home now, and that was correct thank you. "destructive mode" was not on thank you! I have however reached a new issue. 'HostMedia' does not seem to be present in my system. I did however go into each folder looking for 'driveX' and did not see that either. Maybe I set unraid up wrong? I have included pictures of krusader and my 'Main' tab for inspection.

Ok, well, i had a moment so i thought i would remote in to start this. And the first issue I have found is the "format" option is greyed out on all of the unassigned drives. I have installed everything you have requested as well as rebooted the system. All the drives show up, just the format option is grey and unclickable. Both when the array is up and down.

I will be home in about 3-4 hours to try this. The first question I see (and perhaps it will be self evident when I start doing it and can see everything in person). Is: "do I have the array on our off on the first step?

They are most likely trying to make the overall process as familiar as possible. Since I am very new to an operating system that is not windows/dos. But if you would like to type up a very detailed step by step post on how to do it the way you see fit then this thread might become very very useful to future users.

I actually really like that suggestion. I will try that way once the current rebuild is done (in about 20 hours) thank you.

Firstly, thank you so much. I think you just saved me over a month of teadio tedious rebuilds. Secondly, this community is so much better than any linux community I've ever tried to get help from. As I have no formal education in this field and this is just a hobby of mine. Your previous posts on other people's threads have helped me a great deal as well thank you again.

You just said something that gives me hope. You can copy data of drives that are not part of the array? I'm less than a month into unraid could you maybe break that down for me.