What the title says. I was looking into paperless-ngx but it seems to offer no built-in security. I'd ideally want some kind of encryption and *if* i enable remote access have some control over sensitive documents

I'm looking for suggestions. I have a rack in my office with up to 4U space available. I'm looking to set up a backup and storage solution to try and break free from services such as dropbox & google drive. I'd also love to run a few other things like homeassistant and potentially even Klipper for my 3d printer. I'd also like it to be reasonably quiet if possible. So what would you recommend? I could get something like a dell poweredge and add HDDs + replace the fans with noctua to keep the noise down or go with a dedicated NAS like synology. Any other recommendations?