how to size a server for Windchill Index Search

Hello all.

Do any of you know how to size a server for Windchill Index Search in 11.0 M010? I have searched for documentation without any result. I want to dedicate a server just for SOLR to improve response time.

I also checked in the SOLR oficial page but there is not a right answer.

Please help.

Thank you guys in advance.