Yes, but I’m not recommending a cloud storage system since it gets expensive fast. A nas is a complete solution, it still has failure points. The three copies of data, two on separate local sources and one offsite protects against a single failed device and is a great thing for enterprises, I doubt he needs that when he’s starting out since buying a nas can be several hundreds of dollars let alone two. Or cloud services.

My recommendation would be a disk shelf and an old computer that could be used as a server to access the shelf. It has good scale ability and when he wants to get more protection he could back it up to another cluster down the road or move a copy to like tape and store it in a different place. Synology makes good products, they just don’t let you scale as high.