What I’m looking for is a way to take backup of Docker containers so I can restore them in case things go wrong. Doing so with VMs is so easy. If nothing works, I’ll make an image of my OS disk. Unless some benevolent self hoster tells me a simple way, which was my hope when posting here :D
I have that exact same setup but with 4 TB disks on zfs in mirrored mode. Have not noticed any performance issues in my home lab setup mainly being used for immich and media serving. I had purposely chosen disks of different brands specifically for this reason. My vote goes to this setup.