Working with the Intel Rapid Storage Technology Enterprise(RSTe) requires your system to be installed with .Net Framework
Windows 2008R2 SP1 comes with the .Net Framework 3.5.1 embedded in it. It is necessary to enable/install this framework before using the RSTe

Please follow the steps below to enable the Framework on Windows 2K8R2

Installing/Enabling .Net Framework 3.5.1 under Windows 2K8R2 SP1

1. Go to Server Manager
2. In the Server Manager Interface select Add Features to displays a list of possible features.
3. In the Select Features interface, expand .NET Framework 3.5.1 Features. 
4. After Ecpanding the .NET Framework 3.5.1 Features, select NET Framework 3.5.1 and click Next. 
5. In the Confirm Installation Selections interface, review the selections and then click Install.
6. Allow the installation process to complete and then click Close.


Note: If you are using .Net Framework 4.0, then also you will need to enable this.