s3 backup + mySql dump
These two open source scripts are very useful when combined with cron:
s3 Tools : http://sourceforge.net/projects/s3tools/
OpenSource tools to access Amazon S3 file storage. s3cmd - unix-like tools to manipulate stored files from the command line, s3fuse - driver to mount the S3 storage locally.
and
automysqlbackup : http://sourceforge.net/projects/automysqlbackup/
A script to take daily, weekly and monthly backups of your MySQL databases using mysqldump. Features - Backup mutiple databases - Single backup file or to a seperate file for each DB - Compress backup files - Backup remote servers
