4. Partition and format the encrypted backups as written in the [Arch Wiki page](https://wiki.archlinux.org/index.php?title=Dm-crypt/Device_encryption&oldid=557648#Encryption_options_with_dm-crypt).
4. Shred, partition and format the encrypted backups as written in the [Arch Wiki page](https://wiki.archlinux.org/index.php?title=Dm-crypt/Device_encryption&oldid=557648#Encryption_options_with_dm-crypt).
We will use some non-default options to make the encryption stronger