So I recently found out that I have sh*t my leg... I was about to set up unraid but just before dipping my toes I was told that the parity drive needs to be the same or larger in size, really wish I had done more thorough reseach before recently buying that 10TB HDD hehe...
You’ll have a total of 3 TB that’s protected, and 8 TB that’s not. When you get another 10 TB drive in the future, then you’ll have a total of 13 TB that’s protected.