From what version can I apply Data Center license to Server

[#1]

Purpose

Clarify the version of each Server product that can apply for the Data Center license.

Version

Product	Access all of Data Center features on your current Server infrastructure by applying a Data Center license	Document
Jira		Running Jira Data Center on a single node Migrate from Server to Data Center You need to restart if you want to enable clustering.
Confluence	Confluence 7.2 or higher : Below Confluence 7.2 :	7.2 or higher : Running Confluence Data Center on a single node Migrate from Server to Data Center Below 7.2 : Moving to Confluence Data Center You will need to create a “shared home” folder before apply for the DC license.
Crowd	Crowd 3.0 or higher : Below Crowd 3.0 :	Migrate from Server to Data Center Crowd Data Center is available for Crowd 3.0 and later.
Bitbucket		Migrate from Server to Data Center You will need to move to a production database before apply for the DC license.