I was searching fro long finally i found @ youtube channel , Hope this is very useful
About the Brad Hedlund is a Technical Solutions Architect in Cisco’s Center of Excellence for Data Center field sales. Since joining Cisco in 2006, Brad has been helping Enterprise customers design large and small data centers with challenging and complex requirements. Brad has extensive design experience with Cisco’s Data Center switching line (Nexus) and Cisco’s Unified Computing System (UCS), with specific expertise in server networking and virtualization.