This is a historical version of our documentation which does not apply to the current versions of our software.
Please consult our documentation index to find the correct version of the documentation. Newer versions of the documentation are listed towards the top of that page.
Your backup will not work when this message is displayed!
Access to the backup output directory is restricted by your PHP open_basedir setting. This kind of restriction is applied by your host in the server's php.ini which is usually inaccessible to the hosting users (you). In short, open_basedir restricts the directories any PHP script can write files to. Setting the directory's permissions won't help; this is a system restriction imposed by PHP settings.
You must use another directory, residing inside the open_basedir allowed paths. Ask your host for more information.