You install the Web Server (IIS) server role on two servers named Server1 and Server2.
The servers run Windows Server 2008 R2.
Your company has a Web site named www.contoso.com hosted on Server1.
The Web site is due for maintenance. The Web content must be available during maintenance.
You create a mirror Web site located on Server2.
You need to configure the www.contoso.com site to redirect requests to Server2.
What should you do first?