It`s simple with cron:
type: $ crontab -e
And add string like this:
/5 * * * * /path_to_script/backup_local.sh &> /dev/null - it`s mean that backup script will be started every 5 minutes every day (&> /dev/null - to prevent sending mail with result in /var/spool/mail)
More information about cron here: http://en.wikipedia.org/wiki/Cron
backup_local.sh - script which you can create with Areca.
2009-07-05 13:16:39 UTC in Areca Backup