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The 10 Gigabit Ethernet (10GbE) networking standard established in 2002 was, at that time, primarily applicable as part of specific solutions that demanded extremely high bandwidth. Today, however, the broad adoption of server virtualization is helping reshape networking in the data center. Because multiple virtualized servers support heavy workloads on a single physical server, they compete for I/O capacity. This demand often exceeds the multiple Gigabit Ethernet (GbE) connections commonly used for servers today. The shift toward rack-optimized servers in the data center has changed network architecture. Today, top-of-rack switches are deployed to aggregate network connections from rack-mounted servers.
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