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Data Center Interconnect Design Guide with vPC and VSS
This design guide primarily focuses on vPC and VSS based designs for interconnecting Data Centers with loop free L2 topologies and Spanning Tree isolation.
(tags: datacenter design-guide)

Cisco UCS vs. HP Matrix: strategic vs. tactical approach
This article by Steve Kaplan is a well researched comparison of Cisco Unified Computing System (UCS) versus HP Matrix. Steve provides lots of good technical data along with a high level look at the key architecture differences for data center virtualization … one strategic, the other [...]