I've just set up my very first disk array. Just the two disks, nothing else. Totally simple.
After formatting is complete, it's reporting 22GB used.
There's a 21,5GB file on one of the disks called Docker.img, and another 1GB file called libvirt.img.
I understand these are meant to support virtual machines. But boy, why to they have to be so huge?
I don't know that I'll ever need more than 10% of that for my docker VM's, and I was going to put the rest of the storage to good use. But, 22GB is about one-tenth of my storage currently. That's insane, especially if you consider there's literally nothing there yet. Where did all that even come from anyway??
Bottomline is, I don't need or want HUGE files to be created on my disks without my permission. Who knows what else unRAID is going to bloat my disks with?