Thank you for your feedback. We are working on customer controlled failover for both disaster and DR drill scenarios. Please contact email@example.com for more details about enrolling in a private preview, and for any further questions.Jason Tang commented
Hi guys, we are actively working on customer controlled failover scenario but don't have a release date to share it. If you are interested in this scenario, please don't hesitate to contact me at Jutang@microsoft.com so we can learn more from you, thanks.
-Jason Tang (PM of Azure Storage)