Help with unusual failure

[Randall8686]

So i have had a couple of drives fail, but disk 4 in my system is showing as unmountable in maintenance mode, done a quick check and it done a number of things but still showing as faulty (im fairly sure the disk is OK) attached is my diagnostics, if anyone could offer some advice im at a bit of a loss on this one, 

tower-diagnostics-20220423-2346.zip

[Squid]

run the disk check filesystem again disk 4.

 

You are going to have to ultimately rebuild disk 4 onto itself (stop array, remove the drive from the list, start the array, stop the array, reassign the drive, start the array and rebuild)

[Randall8686]

19 minutes ago, Squid said:

run the disk check filesystem again disk 4.

 

You are going to have to ultimately rebuild disk 4 onto itself (stop array, remove the drive from the list, start the array, stop the array, reassign the drive, start the array and rebuild)

have run it again and no change OK thanks i have never built a drive back onto its self so will double check im doing everything right then give that a go. I have a feeling that the Sata expantion cards I am using are a bit pony.