Windows 7 x64 installed on the same computer on these drives? If not, this would point to an Bios/firmware issue on your mainboard, if yes, the drivers for Windows Server 2011 could not be compatible with the SATA controller.
If you log on locally to the server using its desktop, can you adjust the drives in disk management console (creating volumes and format them)?
Would using the diskpart clean command to prepare the volume before integration help (be carefull to not catch the wrong volume!)?
Best greetings from Germany
Olaf