Just buy two external hard drives. Use one to back up your computer every day of the week. At the end of the week put it in a fireproof safe. Take out the one that’s in the safe and use it for the following week’s backups. Lather, rinse, repeat.
Far cheaper to do this in the long run and you also don’t end up potentially sharing your data with the firm that’s storing it for you.
This is exactly what my big time computer experts told me today. However, since my computer here is not used for business I'll only get one external drive & was told you can get them at Costco. I'll do it tomorrow & back up & by the weekend tell Carbonite to shove it.