How to mount a Synology NAS to keep permissions and modification dates?

Which is the best protocol to use to mount a recent Synology NAS (DS1522+) as root in Ubuntu 22.04 to then add a folder for each user and be able to run a cron job to cancel all files older than a certain date?

Basically I am looking to a sort of “storage extension” for a lab computational server, where permissions and modification dates are retained.
The NAS is on the same switch as the server.