Very efficient backup system based on the git packfile format, providing fast
incremental saves and global deduplication (among and within files, including
virtual machine images). Some of its features are:
* It uses a rolling checksum algorithm and hence it can backup huge files
 incrementally.
* It uses packfile format from git, so one can access the stored data even if
 he doesn't like bup's user interface.
* It writes packfiles directly so it is fast even with huge amounts of data:
 it can track millions of files and keep track of hundreds or thousands of
 gigabytes of objects.
* Data is "automagically" shared between incremental backups without having to
 know which backup is based on which other one.
* One can make a backup directly to a remote bup server, without needing tons
 of temporary disk space on the computer being backed up. If the backup is
 interrupted halfway through, the next run will pick up where the previous
 backup left off.
* It can use "par2" redundancy to recover corrupted backups even if the disk
 has undetected bad sectors.
* Each incremental backup acts as if it's a full backup, it just takes less
 disk space.
* One can mount a bup repository as a FUSE filesystem and access the contents
 that way, or even export it over Samba.

• Andrey Cherepanov
• Michael Shigorin
• Grigory Ustinov
• Vitaly Kuznetsov

• bup
• bup-debuginfo
• bup-web