Hi Eduardo,

After you performed all the steps for a test failover using a DR backup as per the link below, you can do whatever you please with the test DR server.  As long as the database was restored in the “Maintenance/Staging” mode and any test failover group you created was reverted, then this server would be “disconnected” from the rest of the environment.  

https://documentation.commvault.com/commvault/v11/article?p=43536.htm

You can certainly keep the services on and use it as a testing server or keep them in a stopped state.  

You can also use this a a cold standby DR server in the event your production server ever failed.

Let us know if you have any follow up questions.

 - Joe