Preparing for Upgrade

Before you can transfer data to Parallels Plesk Panel, you need to do the following:

1. Install Migration & Transfer Manager on the destination server. You can do this in one of the following ways:
   • Through the Server Administration Panel.

     To install it through the Server Administration Panel, go to Tools & Settings > Updates and Upgrades. The Parallels Installer web interface will open in a new window or tab. In the Installer window, click Add Components, select the checkbox corresponding to the Migration & Transfer Manager component, and click Continue.

   • From the command line.

     To install Migration & Transfer Manager from the command line, run the Parallels Installer on the destination server as described in the section Upgrade from the Command Line and add this component.

2. If a source or a destination server is protected by a firewall, configure the firewall to allow the data exchange between the servers.

   When migrating from Windows platforms, allow TCP connections to the ports 6489 (Migration & Transfer Manager). When migrating from Linux, allow TCP connections to the port 22 (SSH).

3. If you are going to migrate from Windows-based platforms, install the Migration & Transfer Agent utility on the source server, as described in the section Preparing to Transfer Data from Panel for Windows.
4. If websites on the source server use databases on remote servers, you should additionally install the corresponding database server on the source server: PostgreSQL on Linux (MySQL is installed by default) and Microsoft SQL Server on Windows. Otherwise, databases will not be registered on the destination server.

   Notes:
   1. Databases without users will not be transferred.
   2. MySQL databases with users that employ pre-4.1-style passwords will not be transferred. You should change their password to the 4.1 style before the transfer. Learn more about MySQL passwords in the official MySQL documentation.

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