For everything that is personal, such as photos, videos, file backups, etc, I follow 3-2-1.

I have a raid1 array with all my files, and any new files are pushed to aws S3 in a weekly basis. its weekly as i may have plenty of GB of photos and videos after a big trip and with my current internet speed 24 hrs may not be enough to upload everything :/

For cold storage stuff, aka everything until last year I also copy it at an old nas at my parents house that is only connected to power and network when i need to add the backups and 2-3 times per year otherwise.

It's also good to keep a raid aray protected with a surge protector and UPS.