Loss-less Ethernet via Data Center Bridging

By Jay Kidd  |  Posted 2008-11-24 Print this article Print

FCoE requirement: Loss-less Ethernet via data center bridging

To deliver storage traffic reliably and in a timely manner, Fibre Channel protocols assume that the underlying fabric is loss-less, even during network congestion. FCoE can use existing 10 Gigabit Ethernet interconnects via the existing IEEE physical pause mechanism.

But new Ethernet extensions, such as priority flow control under the label DCB (Data Center Bridging)-also known as Data Center Ethernet or Converged Enhanced Ethernet-enable logical pause capabilities in order to prioritize traffic types when consolidating I/O. This allows the creation of virtual lanes within an Ethernet link, with each virtual lane assigned a priority level.

During periods of heavy congestion, customers can pause lower-priority traffic while allowing high-priority and latency-sensitive tasks (such as data storage) to continue.

Jay Kidd is Chief Marketing Officer at NetApp. Jay has extensive experience in storage, networking and high-performance systems. Before joining NetApp, he held the position of Chief Technology Officer and VP of Product Management at Brocade. Before joining Brocade, Jay was VP of Marketing for Omneon Video Networks (a supplier of storage and networking equipment for video broadcasters) and Multigen (a real-time 3D simulation software company). Prior to working at Multigen, Jay spent seven years at Silicon Graphics (SGI), where he directed marketing efforts for the graphics workstations, servers and SGI Web systems business. Earlier in his career, Jay worked at Hewlett Packard, where he held key engineering positions in the Information Networks group. Jay holds a Bachelor's Science degree in Electrical Engineering from Princeton University. He can be reached at jay.kidd@netapp.com.

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