For the past few years, I have been using a mix of rsync against an in-house and an external server + encrypted USB drives[0]. The key to encrypt the external d

For the past few years, I have been using a mix of rsync against an in-house and an external server + encrypted USB drives[0]. The key to encrypt the external drives is using a simple algorithm based on the serial number of the drive and a very long string stored in a Yubikey. I never reuse the drives, just accumulate them. [0]: https://www.ceondo.com/ecte/2016/09/simple-secure-backup/ https://www.ceondo.com/ecte/2016/09/simple-secure-backup/