Scenario: A Citrix Engineering 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 Satellite Zone went offline and did NOT resume.
What will happen to the two VDAs in the Satellite Zone?
A. Both VDAs in the Satellite Zone will make intermittent attempts to re-register with the Delivery Controller in the Satellite Zone and then attempt to register with the Delivery Controller in the Primary Zone.
B. Both VDAs in the Satellite Zone will go to an unregistered state and NOT attempt to re-register until the local Delivery Controller resumes and is online.
C. Both VDAs in the Satellite Zone will immediately attempt to register with the Delivery Controller in the Primary Zone.
D. Both VDAs in the Satellite Zone will remain in a registered state, even when the Delivery Controller is offline.
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A for sure.
They attempt to register first on local DDC, when failed, register on primary zone.
No doubts about it.
C is correct
A VDA in a satellite zone registers with a local Controller, if possible. (This is considered the preferred Controller.) If no local Controllers are available (for example, because the local Controllers cannot accept more VDA registrations or the local Controllers have failed), the VDA will attempt to register with a Controller in the primary zone. In this case, the VDA stays registered in the primary zone, even if a Controller in satellite zone becomes available again. A VDA in a satellite zone will never attempt to register with a Controller in another satellite zone.
C is correct. Taken from your link:
” If no local Controllers are available (for example, because the local Controllers cannot accept more VDA registrations or the local Controllers have failed), the VDA will attempt to register with a Controller in the primary zone”
It’s A:
https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/manage-deployment/zones.html#where-vdas-register-and-where-controllers-fail-over
A VDA in a satellite zone registers with a local Controller, if possible. (This is considered the preferred Controller.) If no local Controllers are available (for example, because the local Controllers cannot accept more VDA registrations or the local Controllers have failed), the VDA will attempt to register with a Controller in the primary zone. In this case, the VDA stays registered in the primary zone, even if a Controller in satellite zone becomes available again. A VDA in a satellite zone will never attempt to register with a Controller in another satellite zone.