Borg is a fork of Attic. It is a secure open source deduplicating backup program designed for efficient data storage where only new or modified data is stored.
The main goal of Borg is to provide an efficient and secure way to backup data. The data deduplication technique used makes Borg suitable for daily backups since only the changes are stored. The authenticated encryption makes it suitable for backups to not fully trusted targets.
Borg is written in Python. Borg was created in May 2015 in response to the difficulty of getting new code or larger changes incorporated into Attic.
- Easy to use.
- Space efficient storage – variable block size deduplication is used to reduce the number of bytes stored by detecting redundant data.
- Optional data encryption using 256-bit AES encryption. Data integrity and authenticity is verified using HMAC-SHA256.
- Compression: LZ4, zlib, LZMA, zstd (since borg 1.1.4).
- Off-site backups with SDSH.
- Backups mountable as filesystems.
- Easy installation on multiple platforms: Linux, macOS, BSD, …
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