Disk5 started throwing some errors while I was out of town for Xmas. It has been emulated since then, and I am going to try to move forward with it today, but may not have time to open it up and move some drives around (the 2x 14tb drives I added just last month run hot where they are mounted without another fan, so I want to move them a bit).  But I am not sure if I should move the contents of DIsk5 to the mostly empty DIsk6 and then just replace Disk5 later, but at least have the array back operating in the green... or remove and re-add Disk5 and run some test/diags to make sure I am ok... This seems to happen whenever I have a hard drive problem.. errors of any kind really, I just don't feel like I know where to START or the best way to BEGIN reading/trying to understand what is going on... I understand there are many variables with harrd drives. But is there any resource that will give me some direction like: Look "here" to determine type of error, or something.. then based on that, probable reasons WHY they occurred... 

 

Also, I have many of these shucked 8tb Seagate drives from Costco (SMR) that are problematic for multiple reasons.. Several that are removed because of various "reasons" over time, but they are working without issue in other devices (botrh in TrueNAS Scale and a 5bay usb enclosure using drive pooling) Other than doing a pre-clear, how can I check to see if one of these drives would be BETTER to replace Disk5 with on a temporary basis until I can get ANOTHER new drive to replace it with. 

The NEW Seagate 14tb drives that Costco had turned out to be the newer dual actuator Exos 2x14 drives. A step up for sure! (but they do run even warmer than the SMR drives).  So whenever they get them back in stock, I am planning to replace ALL of the 8tb's over this coming year... as I CAN (hopefully NOT as I HAVE TO).   

Anyway, every time I have an issue, I post the diags and get my problem solved, but never feel like I have learned how to figure anything out for myself moving forward..  Obviously I appreciate the help, but would like to be moving toward self sufficiency for these kinds of situations..

 

So two related questions:
best way to handle the "x" disabled drive TODAY. 

best way to understand why/what is cause behind the failure (I suppose)

 

TIA,

-G

ezra-diagnostics-20231226-0540.zip

Disk 5 dropped offline, so there's no SMART, check/replace cables and post new diags after array start.