Preface  Meeting Installation Requirements  Installing Parallels Plesk Panel on Linux and FreeBSD  Upgrading Parallels Plesk Panel on Linux and FreeBSD  Switching Between Mail Servers  Installing Parallels Plesk Panel on Numerous Servers     Setting Up Mirrors     Simplifying Installation and Upgrade of Parallels Plesk Panel on Numerous Servers with Parallels Products Installer Configuration File     Installing Parallels Plesk Panel Remotely on a Number of Servers  Installing License Keys  Configuring Access to Vendor Updates for Your Server's Operating System  Removing Parallels Plesk Panel from Linux Systems  Removing Parallels Plesk Panel from FreeBSD Systems  Appendix A. Parallels Products Installer's Command Line Options