Backups and Distro Upgrading
I don’t recommend using Déjà Dup to hold your data when you upgrade distros (e.g. from Ubuntu 11.04 to 11.10) without understanding the risks.
I’m the maintainer of the Déjà Dup backup tool that will be included by default in Ubuntu 11.10. So I’m generally biased in its favor. But I am also a cautious person.
My concern stems from the fact that Déjà Dup uses an opaque backup format [1]. Which means that it does not store your data in plain files that you can just copy back into place with the file manager. You’ll need to use Déjà Dup again to restore them [2]. Which is fine if Déjà Dup is working correctly, as it should.
But just from a risk management perspective, I always recommend that people try to have at least one copy of their data in “plain files” format at all times.
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