I’ve been researching NAS and am figuring out how one can play into my current home setup. There’s a lot I don’t know even after researching. Best I explain to clear things up.

Currently, I have a home server running NextCloud, accessible only via my LAN network. It’s run along with a VPN on a Raspberry Pi 4B running Ubuntu Server. The data is on two 512 GiB external SSD drives. One drive is primary & the other is backup of the primary drive via rsync each day.

I’m looking at a NAS for more backups (Ex. 1 day, 3 days, & 1 week at least) since I have sensitive data on the drives. I want to feel more secure about my home setup with the ability to rollback changes if I mess up something. I also want the NAS to be able to run more services other than just NextCloud eventually, like Grocy/KitchenOwl, etc.

I have some more questions about NAS given my info:

• Do I have to use a special NAS-specific OS to make use of the NAS hardware? Like to do snapshots and stuff?
• Kinda related: what if I install something like Debian/Ubuntu on it? Can I still use the NAS hardware in the same way?

I looked into some solutions like TrueNAS and Synology. I prefer an OS that’s free software so I have control over what I’m doing and not held hostage if they want to increase prices, force upgrades, enshittify things, etc.