7z often outperforms .zip and .rar on binary sonar data.
For automating backups, use this 7-Zip Command Line command:
Select 1000M or 4000M (for DVD) to break huge archives into smaller, manageable chunks. 4. CLI Command (Example)
When archiving logs, create a new 7z file for every trip or week. YYYY-MM-DD_TripName_FishermansFriend.7z
Highly recommended. This prevents others from even seeing which files are in the archive. C. Splitting Large Data Dumps
If you tell me your primary data type, I can tailor the 7z compression settings to get you the smallest possible file sizes.
This guide is designed as a "Useful Paper" regarding a specialized archiving/compression scenario: