Is it possible to have two Jira Datacenter instances running off of one license.

[Zachary]

Is it possible to have two Jira Datacenter instances running off of one license.

We would have two instances of Jira, Jira 1 and Jira 2 running off of two different Active Directories. (Two user bases)

[Charlie Misonne · Accepted solution]

Hi Zachary, welcome to the Atlassian Community.

So by 2 instances you mean 2 separate Jira's with other users, projects, jira issues, etc? And not just 2 nodes connecting to each other for high availability?

Each license can be used for 1 instance only. This can also be found in the Atlassian License agreement. See quote below.
So no, you can't use 1 license for 2 instances.

3.3. Number of Instances. Unless otherwise specified in your Order, for each Software license that you purchase, you may install one (1) production instance of the Software on systems owned or operated by you or one of your Authorized Users. We may also make available “developer” licenses free of charge for certain of our Software offerings to allow you to deploy non-production instances, such as for staging or QA purposes.

[Zachary]

Okay, with that known... Is it now possible to take a datacenter instance, and using Jira permissions along with Two different ADs; split the user base in two and have one side only view Jira2 projects, and the other side view Jira1 projects?

[Charlie Misonne]

Yes, you can add multiple AD's to Jira.

To make some projects available for AD1 and others for AD2 you will have to use the user groups from your user directories.

I'd recommend to use unique group names. Don't use jira-users in both AD's for example.

[Nic Brough -Adaptavist-]

No.

A DC licence is for a single cluster (instance) of your system.  If you've got Jira1, and Jira2 DC, all in separate clusters (or just server single, you will need three licences, even if all the users are the same people.