volume_avg_latency{cluster=~"$Cluster",datacenter=~"$Datacenter",style!="flexgroup_constituent",svm=~"$SVM",volume=~"$Volume"}
and on (datacenter, cluster, svm, volume)
  topk(
    $TopResources,
    (
        avg_over_time(
          volume_avg_latency{cluster=~"$Cluster",datacenter=~"$Datacenter",style!="flexgroup_constituent",svm=~"$SVM",volume=~"$Volume"}[3h] @ end()
        )
      * on (datacenter, cluster, svm, volume) group_left (node)
        (
          max by (datacenter, cluster, svm, volume, node) (
            volume_labels{cluster=~"$Cluster",datacenter=~"$Datacenter",svm=~"$SVM",tags=~".*$Tag.*",volume=~"$Volume"}
          )
        )
    )
  )