Introductions
This image gives an example of real server data backup sizes in different method.
October 16, 2025
Server world directory, Zip-backup and 7z-backup size comparison
In most cases, 7z lzma2 and solid compression can reach a ratio of 20% for Minecraft data, which is far less than zip deflate. Using 7z for backups can save drive stroage significantly, 40% smaller than zip archives at average.
October 16, 2025
Time and size comparision for different compression levels
There's a configuration for 7z compression levels presets. Check it out in config.yml. As shown above, the fastest preset L0 still takes less size than zip archive. We STRONGLY RECOMMEND level 5 or lower. L3 is fine enough.
October 16, 2025