If you were setting up a new Start9 box, how much storage would you toss in that sumbitch?
Discussion
4tb
Depends on purpose. I quickly found that I wanted to separate different types of services. Maybe one is NextCloud and has the 4TB. Bitcoin Stack at least 2 or more. Vaultwarden possibly on a smaller hardware.
Proxmox virtualization if you’ve got the hardware.
Just running it as a node or also as a home server?
4TB should have you covered for years to come if just running as a node.
I'd also recommend separation of use. If it's a node, it should just be for Bitcoin stuff. Everything else you install outside of that is just more attack surface.