Re: tarsnap feature question

[Michael Sierchio <kudzu@tenebras.com>]

On Wed, Apr 3, 2013 at 5:39 AM, contenidos2000-tarsnap@yahoo.com.ar
<contenidos2000-tarsnap@yahoo.com.ar> wrote:
> Hello
>
> A simple question about tarsnap.
>
> I'm using amanda for backup some servers. When you restore a backup with
> Amanda, all files that are not in the backup are deleted, leaving the server
> (in the case of a full restoration) exactly as it was when the backup was
> made.
>
> Tarsnap have that feature?

It is worth taking the trouble to understand how tarsnap works.  If
you perform a backup today, only those files present will be on the
backup.  If you want not to incur the storage costs for files that are
no longer present, you may delete previous backups.  Files that are
unchanged between backups benefit from de-duplication code, so apart
from a small incremental cost of metadata, you aren't paying to store
the same bits more than once.  (Colin will correct my terminology).

- M