In this video tutorial I will show you how to install VMware Zimbra 8 on the latest Ubuntu LTS: Ubuntu 12.04. This is OS is fully supported by Zimbra and therefore highly recommended.
Before starting you’ll need a fresh and fully updated version of Ubuntu 12.04 server (x64), and root access. You can gain root access by typing ‘sudo su’. After this you can update your machine by typing ‘apt-get update; apt-get upgrade -y; apt-get dist-upgrade -y; reboot’.
In this video tutorial I will show you how to upgrade your current VMware Zimbra 7 environment to Zimbra 8. This works pretty good. However, I cannot guarantee this will work for your setup as well. Make sure to create back-ups starting the upgrade process.