Re: [Duplicity-talk] Questions

[wighawag]

Hi,

(sorry for the potential double post)

New to duplicity and this looks like a cool project. I am planning to use it for backing up to blackblaze b2 storage which duplicity now support.

I have 3 questions :

- Does duplicity do global deduplication like zbackup (http://zbackup.org/) ? 

(in that case changing filename, moving... does not affect deduplication)

- Does duplicity ever change or delete files  on the repo or does it only append like zbackup does ? zbackup list it as a feature : "Repository consists of immutable files. No existing files are ever modified"

- In case of b2 support (or other dumb remote) how much transfer is performed ?

I suppose duplicity need to download the full archive in order to perform its deduplication logic, or can it be smarter ?

Thanks

On Fri, Jan 8, 2016 at 10:37 AM, wighawag <address@hidden> wrote:

Hi,

New to duplicity and this looks like a cool project. I am planning to use it for backing up to blackblaze b2 storage which duplicity now support.

I have 3 questions :

- Does duplicity do global deduplication like zbackup (http://zbackup.org/) ? 

(in that case changing filename, moving... does not affect deduplication)

- Does duplicity ever change or delete files  on the repo or does it only append like zbackup does ? zbackup list it as a feature : "Repository consists of immutable files. No existing files are ever modified"

- In case of b2 support (or other dumb remote) how much transfer is performed ?

I suppose duplicity need to download the full archive in order to perform its deduplication logic, or can it be smarter ?

Thanks