The Substation Data folder contains "content", such as catalogs, parts databases, templates, and projects, along with various options profiles and settings. This folder is specified during installation but can be copied or moved afterward. The paths on the Setup dialog would need to be updated with any changes to the location of this folder.
The information does not imply compatibility with listed operating systems. Consult the Compatibility Chart for that information.
The default paths are as follows, but check Setup for the actual path(s) being used by the software.
Windows 8.1 & Windows 7:C:\ProgramData\Bentley\Substation V8i\Substation Data
Windows XP:C:\Documents and Settings\All Users\Application Data\Bentley\Substation V8i\Substation Data
Windows 8.1 & Windows 7:C:\ProgramData\Bentley\Substation Data
Windows XP:C:\Documents and Settings\All Users\Application Data\Bentley\Substation Data
Promise Data folder