Pushsave is a push system to save (using hardlinks to save space) a zone via ssh (without password). 
His archive rotation system is versatile.

Basic usage:

Tom want to save daily, weekly, monthly and yearly a zone of his machine on a server in witch he has ssh access without password.
 
file "pushsave" on his machine in ~
file "rotation" on the server in ~
logs in ~/save.log on his machine