Hello Falko, First, i want to thank you for your great how to called "MySQL Backup And Recovery With mysql-zrm On Debian Sarge". I am really interested in this so i like to give it a try. Before i start with it, i need to know if it is necessary to update the MySQL-version on my server and if so how can i do this? The MySQL part of my ISPConfig server has been setup according these commands: apt-get install mysql-server mysql-client libmysqlclient12-dev And if i check the output of my phpinfo file it says: Client API version 4.0.24 So, I guess this is the version of the MySQL, i am running on my server. You mentioned in your how to "MySQL Backup And Recovery With mysql-zrm On Debian Sarge" that this backup system needs MySQL 4.1 at least. So my conclusion is: i have to update my MySQL software form 4.0.24 to 4.1. - How can i do this on Debian Sarge (Unofficial 64 bit) ? I found this in the forums: apt-get install mysql-server-4.1 mysql-client-4.1 libmysqlclient14-dev Is this all i need before i proceed? - Is updating no problem for websites with databases using the current version of MySQL? - Will an update effect my databases and will i be able to login again? Please let me know as i am not an expert at this point.