Your OS obviously is using just the Intel RAID driver, but not the appropriate RST Software with the RST Console and the RST Services. This is the simple reason why you don't see the Intel RST icon in your systray.
Download the complete Intel(R) Rapid Storage Technology package (containing RST drivers + RST software) from here: https://downloadcenter.intel.com/SearchResult.aspx?lang=eng&keyword=Rapid%20Storage%20Technology
The choice of the suitable version depends on the chipset of your system (v3.x.x.xxxx is only for X79 Chipsets, v12.x.x.xxxx can be used with Intel 5-Series, 6-Series, 7-Series and 8-Series Chipsets)..
Since the RST software requires .NET Framework v3.5, it is a good idea to install this MS software before you install the Intel RST package.
After having done that, you can run the installer (=EXE file) of the RST package, which will install the RST driver and the RST software.
After the next (or the second) reboot you will see the RST icon within the systray of your desktop.
First of all, please make sure you have the latest version on the Intel® Rapid Storage Technology installed on your system (12.8). https://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=23060&ProdId=2101&lang=eng&OSVersion=%0A%09%09%09%09%09%09%09%09%0A%09%09%09%09%09%09%09&DownloadType=
The RST should start up once your computer boots to Windows. If it is not stating, you may want to check which version did you downloaded.
The software comes with a delay time by default. It is around 2 or 3 minutes. Please open the software manually and if the RAID 1 was built correctly it should look like this.
This is the latest User Guide available http://download.intel.com/support/chipsets/imsm/sb/irst_user_guide.pdf