Hi,
May I know if Risk Tracer can work with Basic protection for server installation feature set?
--> Yes, it should work.
Network Threat Protection (NTP) is required only for active response to work, You have not installed NTP but make sure network scanning is enabled to ensure the network is protected.
Risk Tracer identifies the source of network share-based virus infections on your client computers.
When Auto-Protect detects an infection, it sends information to Rtvscan, the main Symantec Endpoint Protection service. Rtvscan determines if the infection originated locally or remotely.
Check this article to know more about it: About Risk Tracer
http://www.symantec.com/docs/HOWTO27137