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TELUS is a leading national telecommunications company in Canada that provides a wide range of communication products and services including server-hosting services. Three of company's data centers provide managed hosting services and other provides server co-location services. When the time came to refresh the full-service data centers, TELUS looked for a cost-effective data center switching architecture. The major requirements included availability, high performance, and 10 Gigabit Ethernet, to support customers' increasing use of video and server virtualization. The IT department also wanted to consolidate to fewer switches in order to minimize capital and operational expense. This case study examines how service availability was achieved. TELUS selected the Cisco Nexus switch platform for its three full-service data centers. Each data center uses two Cisco Nexus 7018 Switches in the core, for redundancy. The core switches are housed in the same rack as six Cisco Nexus 5020 Switches that provide server aggregation. Rack-optimized servers connect to the Cisco Nexus 5020 Switches by way of Cisco Nexus 2148 Fabric Extenders that are located in the same rack as the switches, minimizing cable costs. NetApp storage connects directly to the Cisco Nexus 7018 over 10 Gigabit Ethernet. The main benefits include capital cost reduction, more efficient bandwidth, non-disruptive up gradation, lower cabling cost, increased performance, simplified management, more rack space, increasing potential, and readiness of fiber channel over Ethernet.
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