Qnap TS-230
The NAS is exactly as described in the product.
The installation and configuration is easy to get started. Wait for the installation (automatic, for example).
In case you have to start from the beginning (complete reset): Once you have stopped completely remove the disks and format them with another machine.
To make a Cloud-like drive (access from outside): as for everything, a good security is essential (for my part, the day of the installation, I had attempts to connect to the FTP from Russia and the USA).