How to establish jira staging environment

[Luvo]

I am currently on JIRA V6.3.1 and I want to establish a staging environment where the JIRA version will be v6.4 or up. How do I clone the production version of JIRA to staging

[Boris Georgiev [Appfire]]

Follow the steps described in this article https://confluence.atlassian.com/jira064/establishing-staging-server-environments-for-jira-720411697.html

After you clone the instance you can upgrade it to whatever version you need.