The server side consists of three components: the crawler, the database and the web server. For optimal performance these components are running on separate machines. However, if a simpler architecture is desired for evaluation purposes and limited usage is expected, they can be combined on a single or two machines with appropriate resources.
Depends mainly on the number and size of documents initial crawled and added or modified in each period
At least 4 cores are recommended
4-8 GB RAM or more
The web interface is provided by Plexus Connect. Please consult its requirements.