Yes this is active-active array so Controller B will take care of the VDG if Controller A is down.
You need to keep in mind about volume presentation through both Controller Host ports which means multi-path need to be there from both controller as well otherwise eventhough VDG is up by non-owning controller in case of owning controller down but actual volume will not have access.
Hope this helps!
Regards
Subhajit
I am an HPE employee
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