Looking for some help on some backup issues. I have a Qnap NAS that has all of my media on it, as well as a bunch of documents and other stuff. Basically my entire digital life and everything I've accumulated over the past 20 years is stored there. It's populated with four drives that get swapped out as needed to bump up storage as I inevitably download more porn. So I've got redundancy covered with the NAS. However for backup, I've been mostly half-assing it. I've got a spare 1.5tb drive in my desktop PC that every few months I just manually copy over the important folders from my NAS on to it.
I figured that it was time to update this, and picked up a WD My Cloud 4tb drive. At first I was just looking at a 4tb external HD that I could plug directly in to the NAS, and then use built-in backup feature in the Qnap console. Also that way if my building is burning down, I can quickly grab the small external drive on my way out the door. But then for like 20 bucks more I saw the My Cloud and figured why the heck not, it even has backup software! My thinking was that I'd install that backup software on my always on HTPC (since it's running Plex's server as my NAS can't handle it), and then use the included software to backup the network share for my NAS.
Turns out the cheap shit software that you can download won't backup network shares. So here I am manually copying over all my data again.
TLDR: I want to run a backup from a network share (Qnap NAS), to a network share (WD My Cloud). What is the best way to accomplish this? Instead of running entire backups, is it possible to just run some sort of continuous backup? Is there freely available software to accomplish that?