Before you start the upgrade process, you must review system requirements for the new version, back up databases, take snapshots of virtual machines that host server components, and document configuration settings.
Preparing vCenter Server and View Composer for an Upgrade Because vCenter Server and View Composer are often installed on the same virtual or physical machine, some preparation tasks apply to both.
Preparing View Connection Server for an Upgrade Before you upgrade View Connection Server or before you upgrade any of the vSphere components that View Connection Server relies on, you must perform several tasks to ensure that these upgrades are successful.
Prepare to Upgrade or Reinstall a Security Server Before you can upgrade or reinstall a security server instance, you must remove the current IPsec rules that govern communication between the security server and its paired View Connection Server instance. If you do not take this step, the upgrade or reinstallation fails.