Attic (backup software)

Attic is deduplicating backup software for various Unix-like operating systems.

Attic

Original author(s)	Jonas Borgström
Initial release	14 March 2010 (2010-03-14)
Stable release	0.16 / 16 May 2015 (2015-05-16)
Repository	github.com/jborg/attic
Written in	Python
Operating system	Linux, FreeBSD, OS X
Size	86 KB
Type	Backup
License	BSD[1]
Website	attic-backup.org

Borg

Developer(s)	The Borg Collective
Initial release	14 March 2010 (2010-03-14)
Stable release	1.1.13 / 6 June 2020 (2020-06-06)[2]
Preview release	1.2.0a8 / 22 April 2020 (2020-04-22)[2]
Repository	github.com/borgbackup/borg
Written in	Python
Operating system	Linux, macOS, FreeBSD, NetBSD, OpenBSD, Windows, OpenIndiana, Solaris, GNU Hurd
Type	Backup
License	BSD[3]
Website	www.borgbackup.org

History

Attic development began in 2010 and was accepted to Debian in August 2013. Attic is available from pip and notably part of Debian, Ubuntu, Arch and Slackware.

Design

Attic offers efficient, deduplicated, compressed and (optionally) encrypted and authenticated backups.

A backup includes metadata like owner/group, permissions, POSIX ACLs and Extended file attributes. It handles special files also - like hardlinks, symlinks, devices files, etc. Internally it represents the files in an archive as a stream of metadata, similar to tar and unlike tools such as git. The Borg project has created extensive documentation of the internal workings.

Attic uses a rolling hash to implement global data deduplication. Compression defaults to zlib, encryption is AES (via OpenSSL) authenticated by a HMAC.

Borg

In 2015, Attic was forked as "Borg" to support a "more open, faster paced development", according to its developers.[4] Many issues in Attic have been fixed in this fork, but backward compatibility with the original program has been lost (a non-reversible upgrade process exists). Borg 1.0.0 was released on 5 March 2016, Borg 1.1.0 was released on 7 October 2017.

As of 2018, Borg is under active development by many contributors,[5] while Attic is not being developed.

Stable releases are available from various Linux distributions such as Debian, Ubuntu, Fedora, OpenSUSE and others, and from the ports collection of various BSD derivatives. The project provides pre-built binaries for Linux, FreeBSD and macOS.

See also

• List of backup software
• Comparison of backup software

References

1. "license at github.com". github.com. 3 January 2014. Retrieved 5 Aug 2015.
2. "Releases - borgbackup/borg". Retrieved 10 June 2020 – via GitHub.
3. "license in the documentation". borgbackup.readthedocs.io. 28 April 2018. Retrieved 28 April 2018.
4. https://github.com/borgbackup/borg/issues/1
5. "The BorgBackup Open Source Project on Open Hub". 28 April 2018. Retrieved 28 April 2018.

External links

• Official website
• BorgBackup