Scenario: A Citrix Engineer maintains a multi-zone XenDesktop infrastructure with two Virtual Delivery Agent (VDA) machines located in the Primary Zone and two
VDAs in the Satellite Zone. Each zone contains a single Delivery Controller.
During an unexpected outage, the Delivery Controller in the Primary Zone went offline and did NOT resume.
What will happen to the VDAs in the Primary Zone?
The VDAs in the Primary Zone will go to an unregistered state and NOT attempt to re-register until the local Delivery Controller resumes and is online. In a Citrix multi-zone XenDesktop infrastructure, VDAs are designed to register with Delivery Controllers within their assigned zone. If the Delivery Controller in their zone goes offline, they will not attempt to register with a Delivery Controller in a different zone. The VDAs will unregister and will not attempt to re-register until their local Delivery Controller is back online and operational.
I believe this is B. "A VDA in the primary zone registers with a Controller in the primary zone. A VDA in the primary zone will never attempt to register with a Controller in a satellite zone." https://docs.citrix.com/en-us/xenapp-and-xendesktop/7-15-ltsr/manage-deployment/zones.html "The Citrix Desktop Service failed to register with any controllers in the last 2 minutes. The service now tries to register with controllers at a reduced rate of every 2 minutes." https://support.citrix.com/article/CTX126992