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Well for sure that is better than nothing, so since you have it keep doing it until/unless you have something better.
Your next task is to make sure you can restore the data. Since the data is - probably - saved, you have good odds. Practice restoring means that when a computer breaks you will faster be able to get the replacement running again. Practice also means in the off chance something isn't saved you find out about it while your old computer is still running.
Then we need to think about threats.
Ransomware that encrypts your disk will encrypt that shared drive too. I don't know what unraid offers, but you should enable read-only snapshots (now practice restoring them!), and save those snapshots. Ideally you want some pattern like all backups for a week, then 1 backup a week for a month, then 1 backup a month for a year, and 1 backup a year for the next 7 years. This way you can just go back to before the ransomware and restore from backups.
You might delete one file on accident. You are likely not to realize it for a while. One more reason for the pattern saved above. Make sure you can restore individual files.
Your house might burn down destroying all computers. You want a copy of all that data someplace else, maybe more than one someplace elses. Though perhaps you only want a yearly and weekly copy. If the data is encrypted (very good idea for off site!) make sure the key is saved someplace else secure where you can find it - a key you can remember is a bad key so thought about how to save the key is important.
You might die or become mentally disabled with important files that your heirs need. Pictures, wills, tax/bank data (including passwords!). document the above well enough that someone else can at least figure it out. Ideally you would know someone unrelated to you into computers and leave them a lot of money ($5000?) to figure out your system and get your heirs the important files after you die. (this should be a great business opportunity, but odds are not enough people will pay for it)
There are a lot of variations I didn't think of, but I think I covered enough to start you out. You get to decide how far you go. I'm not far enough myself, but at least I have one backup in my RAID.
One last thought - you might have some data you don't want backed up. If you delete the evidence of your crime but the backups are there they can get you. Your secret porn collection might be legal, but still not something you want your heirs to find out about, maybe keep it in a different way? Your call here.