Deduplicating archiver with compression and encryption... CLI Version
(borg command line added to NAS $PATH)
BorgBackup (short: Borg) gives you:
Space efficient storage of backups.
Secure, authenticated encryption.
Compression: LZ4, zlib, LZMA.
Mountable backups with FUSE.
Easy installation on multiple platforms: Linux, macOS, BSD, ...
Free software (BSD license).
Backed by a large and active open source community.