vCenter Server Upgrade describes how to upgrade VMware vCenter Server™ to the current version.
To move to the current version of vCenter Server by performing a fresh installation that does not preserve the existing configuration of your environment, see the vCenter Server Installation and Setup documentation.
Intended Audience
vCenter Server Upgrade is for anyone who must upgrade from earlier versions of vSphere. These topics are for experienced Microsoft Windows or Linux system administrators who are familiar with virtual machine technology and data center operations.