You can change the Reflection installation directory.
To change the installation directory
From your administrative installation point, open the Installation Customization Tool from a shortcut or by typing the following command line:
<path_to_setup> \setup.exe /admin
From the Select Customization dialog box, do one of the following:
Select Create a new Setup customization file for the following product.
Select Open an existing Setup customization file or Companion installer and, in the Open dialog box, select an .mst file.
On the left panel of the Installation Customization Tool, click Install location and organization name.
In the Default installation folder box, specify where to install the product files.
NOTE:List items that refer to folders (for example, [ProgramMenuFolder]) are pre-defined folder keywords. You can create customized directories by adding new folder names with typical directory syntax (such as, [ProgramFilesFolder]\My Folder). Alternatively, you can enter a fully qualified path (for example, C:\Program Files\My Folder), as long as that location is known to exist on the target machine.