This option is only available in the Akeeba Backup Professional releases. You need to subscribe to the Professional edition to use it.
Our users report that they get no joy using this script on GoDaddy hosting, but our alternative script (detailed on the next chapter) works.
This is an optional, advanced and DANGEROUS feature. If you check for failed backups while a backup is still running it is very possible that you will cause the backup to fail! We recommend scheduling backup checks a substantial amount of time (e.g. 1 hour) after the expected end time of your backups.
If you have access to the command-line version of PHP,            Akeeba Backup Professional includes an            even better way of scheduling your failed backup checks. All            Akeeba Backup Professional releases            include the file cli/akeeba-check-failed.php,            which can be run from the command-line PHP interface (PHP CLI). In            contrast with previous releases, it doesn't require the front-end            backup in order to work; it is self-contained, native backup for            your site, even if your web server is down!
In order to schedule a backup, you will have to use the following command line to your host's CRON interface:
/usr/local/bin/php/home/USER/webroot/solofolder/app/cli/check-failed.php
where /usr/local/bin/php is the            path to your PHP CLI executable,            /home/USER/webroot is the absolute path            to your web site's root and solofolder            is the directory where Akeeba Solo is installed. You can get this            information from your host.
In order to give an example, we will assume that your PHP            CLI binary is located in /usr/local/bin/php            (a common setting among hosts), your web site's root is located at            /home/johndoe/httpdocs and your Akeeba Solo            directory is solo:
usr/local/bin/php /home/johndoe/httpdocs/solo/app/cli/check-failed.php
If you are using Akeeba Backup for Wordpress:
/usr/bin/php5-cli /home/johndoe/public_html/wp-content/plugins/akeebabackupwp/app/cli/check-failed.php
Special considerations:
This script is not meant to run from a web interface. If                your host only provides access to the CGI or FastCGI PHP                binaries, check-failed.php will not work                with them. The solution to this issue is tied to the time                constraint above. The workaround we're planning will solve                both issues.
Go to your cPanel main page and choose the icon from the Advanced pane. In the Add New CRON Job box on the page which loads, enter the following information:
Choose the frequency of your backup, for example once per day.
Enter your backup command. Usually, you have to use something like:
If you are using Akeeba Solo:
/usr/bin/php5-cli /home/myusername/public_html/solofolder/app/cli/check-failed.php
If you are using Akeeba Backup for Wordpress:
/usr/bin/php5-cli /home/myusername/public_html/wp-content/plugins/akeebabackupwp/app/cli/check-failed.phpwhere myusername is your                  account's user name (most probably the same you use to login                  to cPanel) and solofolder is the                  folder where you installed Akeeba Solo. Do note the path for                  the PHP command line executable:                  /usr/bin/php5-cli. This is the default                  location of the correct executable file for cPanel 11 and                  later. Your host may use a different path to the executable.                  If the command never runs, ask them. We can't help you with                  that; only those who have set up the server know the changes                  they have made to the default setup.
Finally, click the button to activate the CRON job.
The location of the PHP CLI binary is            /usr/bin/php-cli. This means that your CRON            command line should look like:
/opt/php53/bin/php /home/myusername/public_html/solofolder/app/cli/check-failed.php
If you are using Akeeba Backup for Wordpress:
/opt/php53/bin/php /home/myusername/public_html/wp-content/plugins/akeebabackupwp/app/cli/check-failed.php