Why Unraid in particular? I know it’s a paid OS, which makes me wonder why go that route. I think I would rather have a simples SMB share in a linux environment, instead of paying for something like that.
The community documentation is really good; this makes it super easy to find out how to do something or fix an issue. Adding a drive is super easy , and doesn’t require all the drives to be the same size, you can mix and match. It also supports docker on top of all of that. If you’re willing to manage all of that yourself from scratch , then I doubt you’d like it. It’s convenient for most people that don’t want to spend a lot of time managing and troubleshooting their nas.