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[[!meta title="Obnam - backup program"]]
[[!tag program]]
Obnam is an **easy, secure backup program.**
Backups can be stored on local hard disks,
or online via the
[SSH SFTP](http://en.wikipedia.org/wiki/SSH_File_Transfer_Protocol) protocol.
The backup server, if used, does not require any special software,
on top of SSH.
Some **features** that may interest you:
* **Snapshot** backups. Every generation looks like a complete snapshot,
so you don't need to care about full versus incremental backups, or
rotate real or virtual tapes.
* Data **de-duplication**, across files, and backup generations. If the
backup repository already contains a particular chunk of data, it will
be re-used, even if it was in another file in an older backup
generation. This way, you don't need to worry about moving around large
files, or modifying them. (However, the current implementation
has some limitations: see [[faq/dedup]]).
* **Encrypted** backups, using GnuPG.
See the [[tutorial]], and below for links to the manual, which has
examples of how to use Obnam.
Obnam can do **push** or **pull** backups, depending on what you
need. You can run Obnam on the client, and push backups to the server,
or on the server, and pull from the client over SFTP. However, access
to live data over SFTP is currently somewhat limited and fragile, so it
is not recommended.
* [[1.0 release announcement|1.0]]
* [[Status and support|status]]
* [[Download]]
* [[Contact]]
* [[Bugs]]
* [[Donate]]
Documentation
-------------
* The full manual (currently a work in progress): available as
[a web page](http://code.liw.fi/obnam/manual/obnam-manual.en.html) and
[PDF](http://code.liw.fi/obnam/manual/obnam-manual.en.pdf).
- The Obnam test suite is also meant to be useful for the more
technical users of Obnam to read:
[web page](http://code.liw.fi/obnam/yarns.html),
[PDF](http://code.liw.fi/obnam/yarns.pdf).
* [[README]] (updated at release time)
* [[NEWS]] (updated at release time)
* [[obnam manual page|obnam.1.txt]]
* [[Roadmap for 1.0|roadmap-for-1.0]] (finished)
* [[Roadmap post 1.2|roadmap-post-1.2]] (current)
* [[FAQ]]
* [[Development]] stuff
Links
-----
* [Cache Directory Tagging Standard](http://www.bford.info/cachedir/)
* [Backup bouncer](http://www.n8gray.org/blog/2007/04/27/introducing-backup-bouncer/)
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