Which MySQL directories to back up using FTP My server has been hacked and I only have FTP access to recover my data before reinstalling the OS. 

Which/where are the directories that needs to be backed up? Will MySQL be recovered back to its initial state if I were to copy these directories back to the freshly installed server?
If you FTP /etc/my.cnf, read it and look for


datadir
innodb_data_home_dir : If this is not set, ignore this.


For most MySQL installations, this would be /var/lib/mysql