Up till now I’ve been running Debian on a 2008 Dell tower as my homeserver. I just got 2 1tb drives for it so I want to upgrade to an actual dedicated NAS software to simplify how I manage it. The problem is, I only have 4gb of RAM in it. Any recommendations?

Edit: For context, I mostly use the server for Nextcloud and Syncthing but I also want to be able to have a generic Debian server with ssh access available if I need it.