I personally use duplicity to make versioned backups of my homedir (on OSX, debian and Arch machines) and keep versioned dropbox-like backups via owncloud. My homedir backups are GPG encrypted automatically.
duplicity with gpg is good idea for backup and security, but probably difficult to deal with large amount of binary data(pictures,family videos) up to, say 2TB.
No? If only does deltas, presumably you aren't changing all the files very often. My largest duplicity backup is, ~800GB. With 24h of hourly snapshots, 1 month of daily snapshots, and 1 year of monthly snapshots, the actual backup currently takes ~5TB. It only increases in ~1-10GB/day
I personally use duplicity to make versioned backups of my homedir (on OSX, debian and Arch machines) and keep versioned dropbox-like backups via owncloud. My homedir backups are GPG encrypted automatically.
1: https://git-annex.branchable.com/
2: http://duplicity.nongnu.org/
3: https://github.com/bup/bup