Frankly i find it inconsiderate to the social contract to go out on holidays, and sometimes around them.
Its frankly why i always found Black Friday and the “scope creep” of this festival of consumerism partially so repulsive. I mean its repulsive on its own just in the way people act, but doubly so in that it runs right through a national holiday.
Not free as in foss. But free as in beer.
You can use xpenology or just a synology disk station with active backup for business. It does quite well with windows and just runs in the background.
Before using that I use urbackup ,which is FOSS. It also worked quite well.