25Gb Ethernet
●Enterprise organizations continue to push the envelope as they deploy the latest technologies in order to keep up with exponential data growth and global operations. The availability of Intel® “Grantley” processors delivers a welcome boost to server performance. However, leading cloud providers are clamoring for even more network performance in order to meet the needs of their web-scale data centers and cloud-based services.
●Many organizations currently deploy Top of Rack (ToR) architectures that utilize 10GbE. To keep up with the required network band-width, they would currently need to deploy twice as many 10GbE switches, along with additional cables, space, power, and cooling. To help address network performance needs, leading manufacturers explored the existing Institute of Electrical and Electronics Engineers (IEEE) 100GbE standard, which consists of four lanes of 25Gbps electrical signaling.
●This resulted in the creation of the 25 Gigabit Ethernet Consortium, with goals that include “enabling the transmission of Ethernet frames at 25 or 50Gb per second (Gbps) and to promote the standardization and improvement of the interfaces for applicable products.”
●Given the growing demand for faster network performance and maintaining Ethernet economics, in July 2014, IEEE unanimously agreed to support the development of 25GbE standards for servers and switching. The upcoming IEEE 802.3by 25GbE standard is technically complete and expected to be ratified by June of 2016.
●Utilizing 25GbE results in a single-lane connection similar to existing 10GbE technology—but it delivers 2.5 times more data. Compared to 40GbE solutions, 25GbE technology provides superior switch port density by requiring just one lane (vs. four with 40GbE), along with lower costs and power requirements. The 25GbE specification will enable network bandwidth to be cost-effectively scaled in support of next-generation server and storage solutions residing in cloud and web-scale data center environments. With the announcement of Marvell FastLinQ 41000/45000 Series adapters, Marvell leads the market by delivering the industry’s most compre-hensive host and storage connectivity solution, and offers support for more protocols and features than any other technology available in the market supporting the emerging 25GbE standard. Other products using 25GbE technology are also arriving in the market throughout 2016.
■Key 25Gb Ethernet Benefits:
●The 25GbE specification enables network bandwidth to be cost-effectively scaled in support of next-generation server and storage solutions residing in cloud and web-scale data center environments.
●Key benefits include the following:
◆Maximum switch I/O performance and fabric capability
▲2.5 times more data vs. 10GbE
▲4 times the switch port density vs. 40GbE (one lane vs. four lanes)
◆Reduced CAPEX
▲Fewer ToR switches and fewer cables
▲Lower cost vs. 40GbE
◆Reduced OPEX
▲Lower power, cooling, and smaller footprint requirements
◆Quick maturation by leveraging the existing IEEE 100GbE standard
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45000 Series 、 45000 、 41000 |
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White Paper |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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12/20 |
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Rev. G |
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SN0530917-00 |
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804 KB |
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