See our pre-installation recommendations here.

Install the following features/components to the REWS server:
  1. The Raiser's Edge Plug-in
  2. The Raiser's Edge Web Service

If your organization also uses The Education Edge and also uses NetCommunity's Online Campus Community (OCC) and/or Online Admissions (OA) features, also install the following features/components:
  1. The Education Edge Plug-in
Do not install the remaining components [Blackbaud Core Components, NetCommunity Website, NetCommunity Plug-in Service] to the REWS server.  These components are installed on the Blackbaud-hosted NetCommunity Web Server.