SQL Database Server Integration with other Databases


We are getting ready to rebuild our SolarWinds instance from the ground up (longer story).  I am looking to move my databases from the SQL server shared by 4 other application to its own SQL Server.  

We are having a discussion on whether or not SolarWinds databases MUST be separated or NICE TO HAVE them separated. I was looking around the administrator guides and such and have not seen any concrete proof.  

Anyone out there have documentation specific to sharing SolarWinds SQL Servers with other Applications databases on the same SQL Server?