Which license to setup git bitbucket on self hosted server

[Rijin P T]

I have a Linux 500 GB hard disk server and I wanted to set up git bitbucket in that. While checking for the license I got confused with the deployment option given in the site. i.e. 'Server' and 'Data Center'. for my requirement which license option should I choose. Appreciate your help.

[Nic Brough -Adaptavist-]

Data Centre is for large user bases with multiple nodes and high resilience.  It's a lot more expensive and complex than Server.  Most of us need Server (if you install server and then decide to go to Data Centre, that's a lot easier than starting with Server and moving down later)