If you review and read.
For example:
Kaspersky Anti-Virus for Windows Server don´t support W2k8 S.O.
Kaspersky Anti-Virus for Windows Server Enterprise Edition Supported terminal servers:
* Microsoft Terminal running on Windows 2000 Server
* Microsoft Terminal running on Windows 2003 Server
* Microsoft Terminal running on Windows 2008 Server
* Citrix Metaframe XPe FR 3
* Citrix Presentation Server 3.0
* Citrix Presentation Server 4.0
* Citrix Presentation Server 4.5
Optimization for Intel Xeon™ (Only available with Windows Server Enterprise Edition). Kaspersky Anti-Virus for Windows Server Enterprise Edition is optimized for multi-processor servers based on the Intel Xeon technology. The application’s scalability and high performance make it an optimal choice in high load environments.
Etc....
Recommendation: read again the information of the given links .
Regards