Please see the following from the download package description:
Please note use of this build: This build is for evaluation purposes only. You should not install this in a production or regular home environment. Microsoft does not license you for, nor support installing in these environments.
Your license to preview this product expires June 30, 2011 or commercial release of the software, whichever occurs first. The software has an internal expiration to stop functioning on Aug 1 2011. We will remove the Connect offering for this
release upon commercial release of the software.
This post is "AS IS" and confers no rights. Jonas Svensson [MSFT] Windows Home Server Community Program Manager
Windows Home Server Team Blog
Connect Windows Home Server
Windows Home Server