Custom Installation (Version 6)
Use the Custom Installation option to install PureMessage 6 on two or more servers.
These instructions assume that you are maintaining the same configuration used in version 5.6.1. If you want to re-assign roles or use a different mail transfer agent, it is recommended that you re-install PureMessage 6 on each server.
When upgrading a PureMessage deployment of two or more servers, retain the role(s) currently assigned to each server. For instance, if the server you are upgrading is running the Centralized Server Manager and Database Server roles, select, Custom Install, and then select the same roles.
For more information, see "Custom Installation" in the "PureMessage Installation" section.