The only solution I've found is to compress and copy the
$ tar -cvzf /tmp/neo4j-backup/2013-11-07-graph.gb.tar.gz /var/lib/neo4j-server/data/graph.db/
If you are using enterprise edition - you are lucky. Simply use
neo4j-backup tool. It supports full and incremental backups. See docs for details.
$ neo4j-backup -from single://192.168.1.34 -to /tmp/backup/neo4j-backup
After that, you could move the backup to another server over ssh using