Data Center Networking - Connectivity and Topology Design Guide
Demand for application availability has changed how applications are hosted in today's data center. Evolutionary changes have occurred throughout the various elements of the data center, starting with server and storage virtualization and also network virtualization. Main motivations for server virtualization were at first associated with massive cost reduction and redundancy and evolved to scalability and agility. Data center LAN technologies have taken a similar path; with a goal of redundancy and then to create a more scalable fabric within and between data centers.