What is a best/easiest backup solution for my needs? [Options given]

I just picked up a long over due 16TB USB 3.0 drive intended to use as a 2nd redundancy backup for my eventual 3-2-1-1-0 backup setup (or 3-2-1). I intend to have it as a backup for my Arrays important data ( which also holds a folder for my Appdata backup via Unraid plugin). 16TB should exceed what I plan to use my server for. Maybe years later I my upgrade.

I am very new to Unraid (7 months uptime) and also very new to Linux, I want the simplest solution for backing up on a schedule to this external drive.

I see two options and I am thinking of using DirSyncPro as it seems like a good choice. I also see it not only has a Unraid plugin/docker, but also a Windows app. So here's what I am thinking, one of tow options:

1. I already have all the data/media files I need shared from my Unraid server to my home network. So maybe connecting that USB external drive to a PC that is running nearly 24/7 (NUC MiniBee) and have DirSyncPro run as a Windows program. I like this idea most (if possible) as I am used to a similar setup as I used in years past on my Windows entry level server for 12 years called SyncBackPro I just think running DirSyncPro to capture the mapped/shared drives is easier than managing it from Unraid. Not that I don't want to learn it or think it's probably great, I just have so much I want to do on my new server, and as a result, I get to overwhelmed and don't do give my Unraid the love it deserves.

2. Mount that 16TB USB drive to my Unraid (which am sure is a process) and setup DirSyncPro to backup to it.

Again, assuming any of this is possible

So what is better/easier, and if not DirSyncPro, what/how would you do it?

Remember, I strive for simplicity. 🫠