Citrix Vda
Upon boot, the VDA finds a Controller (via ListOfDDCs registry keys, Group Policy, or auto-discovery in cloud). It registers itself, announces its capacity (number of sessions, available resources), and maintains a continuous heartbeat. If registration fails, the machine is invisible to the farm.
Parameters to know:
In a typical Citrix deployment, the VDA is the only component that interacts directly with the Windows OS kernel to intercept graphical calls and manage resource allocation. citrix vda
Every VDA consumes RAM and CPU even when idle. For non-persistent VDI, density is king. Upon boot, the VDA finds a Controller (via