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

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