I have a 500GB internal SSD containing
/boot as created by the default LUKS-encrypted install.
I also have a 2TB external HDD that I want to use for backups. I’m trying to find the right system to back up the SSD to the HDD roughly every 1-3 days.
My priorities are:
- Keeping the data encrypted
- Being able to restore / boot from the backup as easily as possible
- Avoiding unnecessary wear on the HDD.
Since the backup drive is 4x the size of the original, compression / deduplication is not that important, although it would of course still be nice to have.
Some ideas I’ve had, that I’m not sure of the wisdom or possibility of:
- Clone the encrypted drive into a partition of the backup drive (while the system is running)
- Format the backup drive as btrfs (on top of LUKS?), rsync everything into it, and use snapshots for versioning
- I don’t think this would be bootable, but it would be pretty elegant (and probably not hard to restore from).
- Just use borg/vorta
- Definitely not bootable, harder to restore from, but would save me the headache of setting everything up.
I’d really appreciate any ideas or advice.