It uses standard "tar" and "find" commands on the client. If you have something like a database, then you should exclude the dbf files and uses the database's

It uses standard "tar" and "find" commands on the client. If you have something like a database, then you should exclude the dbf files and uses the database's tools to put the DB in hot backup mode (using a snebu-client plugin script -- there is a template script in the manpage for snebu-client-plugin(5). You can also create a plugin script that performs a disk snapshot (using LVM snapshot or similar), then mount and backup from that.