Availability Set is a logical grouping of the Cloud Volumes ONTAP nodes. It ensures that the nodes are in different fault and update domains to provide redundancy and availability. Multiple Availabili...Availability Set is a logical grouping of the Cloud Volumes ONTAP nodes. It ensures that the nodes are in different fault and update domains to provide redundancy and availability. Multiple Availability Zone is a physical separation of the Cloud Volumes ONTAP nodes. Availability zones ensure that the nodes are in different fault domains. Communication is faster in an Availability Set but reliability is higher in Multiple Availability Zone setup. High availability pairs in Azure