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Off late, a vast number of interconnect technologies such as InfiniBand, Myrinet and Quadrics have been introduced into the System-Area Network (SAN) environment; the primary driving requirements of this environment being high-performance and a feature-rich interface. Ethernet, on the other hand, is already the ubiquitous technology for Wide-Area Network (WAN) environments. Traditionally, SAN technologies had been shut off from the WAN environment due to their incompatibility with the existing Ethernet compatible infrastructure. Similarly, Ethernet has traditionally not been considered a SAN interconnect due to its close to order-of-magnitude performance gap compared to other SAN interconnects such as InfiniBand, Myrinet and Quadrics (informally called Ethernot networks).
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