Proper backup advise please

Hello all

As Ralf has indicated, the DB backup within EGW covers the Meta-data. I wish to ensure that I have all the working data in a backup routine, and as far as I can determine I should include these directories:
./var/lib/egroupware
./var/lib/mysql/egroupware
./var/www/html/egroupware

Are there any other directories or files that should be included?

Thanks in advance

Ken