What is "obnam"

"Obnam" is Free and open-source backup software.

Based on its official site's FAQ page, "Obnam" is an acronym that stands for: OBligatory NAMe

The most important features are:

1. Easy usage
2. Snapshot backups
3. Data de-duplication, across files, and backup generations
4. Encrypted backups
5. Supports both PUSH (i.e. Run on the client) and PULL (i.e. Run on the server) methods