They're just like public trackers, but private so you'll generally need an invite to get access to them. They generally are much better than the public trackers. Not sure about an anime specific one though.
Running on my own hardware at the moment, I'm looking into VPS options though. Its a VM on a dell R720, gave it 8 CPU cores and 16 GB RAM (It's ddr3 though). I'm literally the only person using my instance at the moment, but performance has been great. Some issues federating with lemmy.ml, but I'm pretty sure that's on their end since every other instance works fine. Really the biggest downside has been there's nobody else to subscribe to communities to get the federation started, so every new subscription is pretty much empty for a while.
It's been taking a bit of tweaking since I decided to host my own instance, but when it works it's fantastic. Feels like the social media of 10 years ago.
Arch linux - Love the bleeding edge side of it, as well as the AUR, and wanted something with a bit more learning potential than Fedora, which is what I was previously using.
They're just like public trackers, but private so you'll generally need an invite to get access to them. They generally are much better than the public trackers. Not sure about an anime specific one though.