Comment 3 for bug 423988

> $ duplicity full /dir scp://user@host1/dest scp://user@host2/dest scp://user@host3/dest

yes this is the best way but it will require changes to duplicity it self. which I think will require far greater effort then a just a backend implementation.

> - there should be an utility to check if all backends are in sync and synchronize them if needed.
>
> This is not really necessary if you are using the multi:// patch.

But it is because now if the upload to the second backend fails next time duplicity start it will see that the file have been uploaded because it is available on the firs backend