The impact of cloud computing data center on cabling system

Before we talk about the cloud computing data Center, we need to understand what is cloud computing? Cloud computing refers to the delivery and usage patterns of IT infrastructure, which means acquiring the required resources over the network in an on-demand, extensible manner. A network that provides resources is called a "cloud." "Cloud" Is it resource pool, can be obtained at any time, on-demand use, at any time to expand, pay by use. This feature is often referred to as the use of IT infrastructure like hydroelectric power. The Cloud Computing data Center is the overall it physical equipment and infrastructure needed for cloud computing services.

A data center that provides cloud services gives users a powerful computing power, and one feature is "Super scale". such as Google, Facebook, Tencent and other companies to build cloud computing data centers are often more than hundreds of thousands of or even the size of millions of servers. According to Cisco's forecast, global cloud traffic will grow at a compound growth rate of 66% a year, with the amount of work that will be handled at the Cloud data Center for the first time in more than 51% of the traditional data centers in two years. Expected to reach 57% by 2015, the rapid rise in cloud computing data center signals that the infrastructure needs of the cloud data center will grow at a synchronized pace, while the data center cabling system as one of the infrastructure, along with cloud computing data Center application development on the scale of the cabling system, technical level, The industrial level has been affected accordingly.

This paper will focus on the network bandwidth of cloud computing data center, port energy consumption, cabling architecture and data Center industrialization development, adapt to cloud computing data center of the new Generation cabling system framework.

Key words: Cloud computing Data center TOR Cabling System

The impact of cloud computing data center on network port bandwidth

Cloud computing data centers are widely used in virtualization technology, cloud-based data centers can support more virtual machines than traditional data centers and workloads per server, and cloud computing data Center data in addition to end-user access to data flow, the application dynamic switching between cloud computing servers produces a large number of data streams, as shown in Figure 1, Make data center communication more busy. Compared to traditional data centers, the single physical host data traffic in cloud computing data centers may be 4 times times, 8 times times, or more than 10 times times that of traditional data center servers. Such large data traffic will require lower latency performance, higher reliability, and higher bandwidth support for the underlying data center cabling system. Based on this thinking, the Cloud Computing data Center Server 10G Port will be able to better meet and support cloud computing data swallow spit traffic. With regard to the trend of server 10G port applications, it can be learned from Intel's forecast report on server ports that starting in 2012, the 10G server ports will begin to deploy heavily. And according to the U.S. Infonetics Third party advisory agency on Network device port application of the forecast report can be seen (as shown in Figure 2), to 2015 years more than 50% of the network device port with 10G port, and about 25% of the port will be used 40g/100g.

From the related forecasts mentioned above, we can see that the network evolution of cloud computing data Center is very clear 唽 direction. In order to reduce the delay of the network and improve the response speed of the data center network, the cloud Computing data Center will adopt the core + Access Layer Two-layer network architecture instead of the traditional core + convergence + Access three-layer mode. The core network uses the 40G/100G network port, the Access layer network and the server adopt the 10G port. The increase of network bandwidth will put forward to the higher requirements of the wiring system, when the server uses the 10G port form, the copper cable class wiring needs to use at least the CAT6A level the cable, the concrete application may refer to the IEEE802.3AN standard 10GBASE-T transmission protocol. If the 10G using fiber cabling, priority to adopt multimode OM3 level and above the fiber system to support the application of server ports, reference IEEE802.3AE standard 10GBASE-SR. For the application of the backbone 40g/100g of the data center, we can use the mtp/mpo fiber parallel multi-channel multiplexing transmission way 40GBASE-SR4 and 100gbase-sr10 in the IEEE802.3BA, the wiring system will need to adopt mtp/ The MPO pre-connected system is supported, as shown in Figure 3. The application of Class F and class FA to support 40g/100g for copper cabling Systems is currently not supported by formal standards. October 2011, ISO/IEC 11801 ISO-IEC JTC 1/SC 25WG3 launched a new proposal to study the support of 40G data transfer on a balanced twisted pair, and if everything goes well, the draft standard is expected to be completed by 2014.