One windows server, Two instances of jira software

unknown

As JIRA installation combining the tomcat part, I wonder -

is there any best practice case for a windows server providing more than one jira instances ?

Any license issue involved ? 

can these jira instances managed separately on the same server without  impact onto each other ? 

Thank you for your input during holiday season :-) 

Nic Brough -Adaptavist-

Yes, you can run several Jira systems on a single server.

However, I am worried about your mention of "combining the tomcat part" - do NOT try to run more than one Atlassian application in a single Tomcat.  It's not just unsupported, it goes horribly wrong.

For two Jira systems on one server, run two Tomcats,  with separate data directories, separate databases, and on different ports.

You'll need to ensure your server has the resources to run both of them separately.