I utilize 2 MS-425 stacked in conjunction with a Hyper-V Cluster to provide failover clustering. I always seem to have issues with my cluster after upgrading firmware of the network. When upgrading the stack does the entire stack upgrade at the same time or does it upgrade half of the stack then the other?    My thoughts are that the entire stack is upgraded at the same time which causes my cluster to lose connectivity with itself because I only have the cluster attached to this stack. Is there something I'm missing? ... View more