I do have an Unraid running with Nextcloud and I’m looking to have some sort of a local backup system since I have everything moved here. Ideally I want to have a local SSD that backsup if there is any change on a timely manner. I can have that connected to my Unraid or have it separate on a different system running in the house all the time. Would really appreciate if anyone can point me to a link to or a document.
Did you try typing man rsync into the terminal yet? It’ll give you a metric ton of options. Without more details any instructions will be perfunctory at best.