I use a cheap alternative to the 3-2-1 rule[1].

I use a mini pc with small smb shares (less than 1 TB). This thing is on 24/7, but runs energy efficient.

When it's time to move data, i copy it to a Synology NAS that holds lots of TB's. Then it's also time to backup the really important stuff, which goes to a Hetzner Storage Box[2].

[1]: https://en.wikipedia.org/wiki/Backup#3-2-1_Backup_Rule [2]: https://www.hetzner.com/storage/storage-box/