Symantec Endpoint Protection provides the Shared Insight Cache and Virtual Image Exception features for virtual infrastructures, which you can enable to improve performance. You need to perform some additional installation and configuration tasks to enable these features.
Table: Virtual infrastructure features and their use
The protection technologies in Symantec Endpoint Protection Manager and Symantec Endpoint Protection typically function the same way in virtual infrastructures as they do in physical infrastructures. You can install, configure, and use Symantec Endpoint Protection Manager and Symantec Endpoint Protection clients in virtual infrastructures in the same way as in physical infrastructures.