Snaphot configuration for my multisite

Hello,

I have a multisite installation on http://noolaa.com. This multisite hosts 7 wordpress sites on the same domaine based on subdirectories (http://noolaa.com/martinique, http://noolaa.com/martinique-shopping, ...).

I would like to backup the whole installation with Snapshot plugin. Could you please help me about the configuration ? First of all, the plugin ask to chose which blog to snapshot. Does that mean the whole multisite or will I have to do the same operation 7 times for each of my wordpress site.

Thanks for your help.

Youri.