vSphere Assessment Tool, the new VMware Assessment tool has been released last year, to make vSphere upgrades easier.
This tool is made of two components, a desktop client which is responsible for collecting the vSphere data, and an online portal that provides the most up to date information on hardware compatibility, everything on a user-friendly format.
On the portal, the summary view provides a breakdown of the different editions of vSphere in your estate and provides insight into which hosts are at risk of unsupported versions of vSphere. The host details panel displays information on the current vSphere version, server model, network and storage adapters. Each vSphere version and hardware component indicates if support has been verified.
Check the vSAT walkthrough: