Overcommitted resources within ESXi may result in high memory usage or high CPU usage status within the user interface (UI) of Advanced Threat Protection (ATP) Virtual Edition (VE).
When running ATP in a virtual environment, errors can occur if your physical resources are over-committed.
Make certain system memory and other resources are reserved in your virtual environment for the virtual machine running your ATP appliances. See the Symantec Advanced Threat Protection Installation Guide for a complete list of system requirements and see your VMware documentation for more information about reserving system resources.
To confirm whether the ATP guest has enough memory reserved to meet system requirements
Before adding memory, check with the adminstrator of the host where ATP VE resides to ensure that the needed memory is available both within the host where ATP VE resides and within the resource pool where ATP VE resides.