Introduction to Incast, Head of Line Blocking, and Congestion Management

Presented by

Sathish Gnanasekaran, Broadcom; John Kim, Mellanox; J Metz, Cisco; Tim Lustig, Mellanox

About this talk

For a long time, the architecture and best practices of storage networks have been relatively well-understood. Recently, however, advanced capabilities have been added to storage that could have broader impacts on networks than we think. The three main storage network transports - Fibre Channel, Ethernet, and InfiniBand – all have mechanisms to handle increased traffic, but they are not all affected or implemented the same way. For instance, placing a protocol such as NVMe over Fabrics can mean very different things when looking at one networking method in comparison to another. Unfortunately, many network administrators may not understand how different storage solutions place burdens upon their networks. As more storage traffic traverses the network, customers face the risk of congestion leading to higher-than-expected latencies and lower-than expected throughput. Watch this webinar to learn: •Typical storage traffic patterns •What is Incast, what is head of line blocking, what is congestion, what is a slow drain, and when do these become problems on a network? •How Ethernet, Fibre Channel, InfiniBand handle these effects •The proper role of buffers in handling storage network traffic •Potential new ways to handle increasing storage traffic loads on the network After you watch the webcast, check out the Q&A blog http://bit.ly/323kyNj

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The Storage Networking Industry Association (SNIA) is a non-profit organization made up of member companies spanning information technology. A globally recognized and trusted authority, SNIA’s mission is to lead the storage industry in developing and promoting vendor-neutral architectures, standards and educational services that facilitate the efficient management, movement and security of information.