vSphere Upgrade describes how to upgrade or migrate to vSphere 5.0 Update 1.

To learn how to simplify and automate your datacenter upgrade, see the vSphere Update Manager Installation and Administration Guide.

If you have legacy versions of ESX, ESXi, and vCenter Server, and you want to move to VMware vSphere™ 5.0 Update 1 by performing fresh installations of vSphere components without preserving existing configurations, see the vSphere Installation and Setup documentation.

vSphere Upgrade is for anyone who needs to upgrade from earlier versions of vSphere to vSphere 5.0 Update 1. These topics are for experienced Microsoft Windows or Linux system administrators who are familiar with virtual machine technology and datacenter operations.