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Cisco Unified Computing System (UCS) (Data Center): A Complete Reference Guide to the Cisco Data Center Virtualization Server Architecture by Roger Andersson, Tommi Salli, Silvano Gai

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Chapter 4. I/O Adapters

Historically, server I/O connectivity to storage, local area networks, and other servers have been accommodated by hardware and software specifically designed and dedicated to the application, each with different traffic characteristics and handling requirements. Server access to storage in enterprises has been largely satisfied by Storage Area Networks (SAN) based on Fibre Channel. Server access to networking devices is almost exclusively satisfied by local networks (LAN) based on Ethernet. Lastly, server-to-server connectivity, or inter-process communication (IPC) for high performance computing (HPC), is being satisfied with InfiniBand. While each of these technologies serves their application needs very well, the ...

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