I have my /TV shows share set up with high water (I've switched to fill up and it didn't change the issue) and to include disks 3 and 4. However, for some reason there are 2 full seasons from the /TV shows share on disk 1. 

 

What could I be missing?

You are likely to get better informed feedback if you post your system’s diagnostics zip file.

 

Commonest cause can be a too restrictive Split Level setting that is forcing files to the drives in question.

 

Thanks for the reply, see attached.

tower-diagnostics-20220301-1334.zip

Not that changing the included disks does not apply to existing files (they have to be moved manually iff you want them on different disks). - it will only apply to new files.   Not clear from your original post if you are talking about existing files, or about new files going to the wrong drive.

 

According to your diagnostics it looks like there is also content for the TV share on disk2 whereas the Include settings now only show disk3 and disk4 as the desired targets for that share.

The files existed (I'm pretty sure on Disk 3) and this morning I was watching Disk 1 slowly fill up. When I checked, it had the TV share in there and more TV files continued to go into Disk 1 (and apparently Disk 2 as well [but I didn't notice that because Disk 2 space isn't as important to me]). I will google how to move files from the disks manually in the meantime.

Okay, so, I definitely have files (from the TV Shows share [only supposed to use disk 3 and 4) that are currently on Disk 3 that are being written to Disk 1 as I type this. I 100% don't want that because Disk 1 is my SSD I plan on using for Appdata and VMs. I can try manually moving files off the disk but, it's just going to keep putting them back. I have no idea what is wrong in my setup that is causing this. Someone please help.

51 minutes ago, Myrmidon4256 said:

Disk 1 is my SSD I plan on using for Appdata and VMs.

This should be in a pool. SSDs in the array can't be trimmed, and can't be written faster than parity.