Thanks Wdey, I am very appreciate of your quick reply and answers.. bare with me.. Im a growing fan of the Vblock, just also need ot know how it works and where it is not a good candidate to host workload. Interms of Load Balancing the Pinning of Blades. Your answered by explaining that both links to FEX A and FEX B are active  (FEX=IOM) and portchannel provide redunancy. "How does the VM decide which CNA port to send traffic? This depends on the hypervisor; take e.g. VMware ESXi and vswitch: load balancing can be configured per switch and / or port-group; important caveat: don't use IP hash, because fabric interconnect doesn't support LACP; by default its originating virtual¨port id." Does this mean, when using Orignating Port ID,      the blade is restricted to the bandwidth of the uplink?      and VMs on that blade must rely on the hypervisor's vDSwitch for load balancing thier traffic?      Does this mean if VCenter is unavailable loadbalancing is at risk?          How does traffic affect traffic ingress to the blade and the VM (assume no Cost of Service is configured)   Thanks everyone ... View more

Thanks Keny, You answered the my questions perfectly and thanks for the images and the additoinal information. I have been looking all over for these answere. ... View more