Q: What is the difference between “Flat Structure” and “Date Folders” mode?
A: BmuS automatically detects your backup style.
- Date Folders: If you enable
BACKUP_USE_DATE_FOLDERS=1orDEDUP_ENABLE=1, BmuS creates a new folder for every backup (e.g.,2025-11-28). Retention deletes the entire folder when it gets too old. - Flat Structure: If disabled, files are copied directly into the backup root. BmuS will delete individual files based on their age (
mtime) to save space.