Posts about Data Center Ethernet

As mentioned in my last post, data center interconnect (DCI) is a growing market for the entire optical value chain – from carriers to optical component suppliers. Standard OTN, DWDM, Carrier Ethernet or legacy SONET/SDH platforms alone cannot address the high-bandwidth, low-power, low-cost and high-density demands of DCI. As a result, many network equipment manufacturers (NEMs) have developed specific solutions to address it. Some of the most common solutions are described below ...
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The need to change the data center network from a hierarchal one to a leaf-spine or more meshed one has arisen from the ever-increasing need for compute and storage access and the use of server virtualization. Now that many applications can run on one server, if that server gets overloaded, virtual machines (applications) need to move to another server quickly—four hops through the network is not quick, so network architecture is changing to accommodate the mobility of VMs. So now what used to be just a client-server standard three-tier network is starting to look like a HPC cluster.
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