Is Symantec Endpoint Protection 11 supported on Windows SBS 2011? Is the Symantec Endpoint Protection Small Business Edition 12.0?
Windows Small Business Server 2011 is built on Windows Server 2008 R2. Symantec Endpoint Protection 11 (RU5 and above) is supported on that OS, so it is therefore it is fully supported for SBS 2011 servers.
Symantec Endpoint Protection Small Business Edition 12 RU1 is also fully supported for Windows Server 2008 R2 and thus for SBS 2011 servers.
Future releases of SEP are expected to also be "certified" for SBS 2011 (a full range of tests run specifically on that platform).
Windows Small Business Server 2011 Standard or with Premium Add-On