NDC Server
You can deploy Netwrix Data Classification Server on a physical server or on a virtual machine via software such as VMware or the Microsoft Hyper-V platform.
Netwrix doesn't recommend installing NDC Server on a highly-loaded production machine - NDC data processing is highly resource intensive, and sharing resources with other programs and processes decreases the performance of both NDC and the other processes. See Hardware Requirements for the recommended NDC Server specifications.
The installer always installs a web-based client (management console) together with the NDC Server, so you must enable the IIS server role on the target machine. See Software Requirements for supported operating systems and prerequisites.
For evaluation and PoC purposes, Netwrix provides a virtual appliance — a virtual machine image with pre-installed Netwrix Data Classification on Generalized Windows Server 2016 (180-day evaluation version) and Microsoft SQL Server 2017 Express. For details, see Requirements to Deploy Virtual Appliance.
Remember that for production environments, your NDC Server and database server must meet the Requirements to Install Netwrix Data Classification. The virtual appliance configuration is insufficient for production; Netwrix doesn't recommend it for that purpose.
To balance processing load in large-size and extra-large environments (16m+ objects), Netwrix strongly recommends deploying multiple NDC Servers in Distributed Query Server mode. See Configuring NDC Server Cluster and Load Balancing with DQS Mode for instructions on setting up a multi-server cluster.