Data Center
A data center is a globally coordinated, device-specific network that delivers, accelerates, displays, calculates, and stores data on the Internet infrastructure.
The definition given by Wikipedia is "The data center is a complex set of facilities. It includes not only computer systems and other supporting devices (such as communication and storage systems), but also redundant data communication connections, environmental control devices. , monitoring equipment and various safety devices." [1] In its book, The Datacenter as a Computer, Google interprets the data center as a "multi-functional building that can accommodate multiple servers and communication devices. These devices are placed together because they have The same environmental requirements and physical security requirements, and such placement is easy to maintain, and "not just a collection of servers"
The specific networking structure is as follows
The wireless DDN system is divided into two parts: the monitoring point and the data center. The monitoring point adopts GPRS DTU, which can provide RS-232, RS485, and Ethernet interfaces. The data is connected to the Internet by broadband ADSL or leased line. The specific access methods are as follows:
a) Monitoring point access mode: The monitoring point is connected to the GPRS DTU transmission module through RS-232, RS485 or Ethernet interface, and then set the DTU related parameters. Each GPRS DTU transmission module can be loaded with a China Mobile data SIM card. . b) Data center access mode: Data center access is mainly divided into two categories:
1) Access to the Internet The data center adopts broadband ADSL access. The advantage of this method is that it has large bandwidth and is economical. The disadvantage is that the security is poor and the delay is slightly larger than the dedicated line access. The LAN is used to share the Internet access. This mode is similar to ADSL access, but you need to do port mapping when accessing. Dial-up Internet access by telephone line. In this way, the access bandwidth is narrow. Therefore, it is only suitable for networking methods with fewer points and a small amount of data. The network topology is as follows:
2) Mobile company access The data center uses wireless network operators (referred to as China Mobile) to provide channel access. In this way, there are several connection methods: using the mobile company's computer room dedicated line access mode, this mode has large bandwidth ( Generally 2M), the delay and security are very good, but the price of renting this special line is more expensive. It is especially suitable for users with high safety factor, such as banks and POS unit networks. This method is also recommended when there are many sub-stations. Adopt GPRS wireless access mode, this way to connect a GPRS MODEM in the data center, dial-up Internet access through the PC in the data center. The advantage is that the network speed is fast and the cost is economical. The disadvantage is that the bandwidth is narrow (10Kbps for GPRS uplink and 40Kbps for downlink), and the delay is large. This method is used more in testing. If you want to use in the actual project, you need to apply for APN.
New network topology
The new network topology design is a dedicated channel topology. The specific application takes a dedicated network channel. This topology design theoretically considers that devices in the network can freely move physical locations and inherit the switches of the traditional network topology. The characteristics of forwarding data. Although the current mainstream network does not seem to be able to use these technologies, the maturity of emerging technologies will take time to verify, perhaps not now, but as a next-generation technology, there is a lot of room for development in the future. Including: multi-layer leaf-spine network topology, Hypercube cube network topology, Toroidal ring network topology, Jellyfish jellyfish network topology, DCell network topology, FiConn network topology, BCube network topology, CamCube network topology , Butterfly butterfly network topology.
Application
The primary purpose of a data center is to run applications to process data for business and operational organizations. Such systems belong to and are developed internally by the organization or from enterprise software vendors. Like general-purpose applications, there are ERP and CRM systems. A data center may only focus on the operational architecture or provide other services. Often these applications consist of multiple hosts, each running a single component. Usually such components are databases, file servers, application servers, middleware, and many other things. Data centers are also often used for backups of non-working sites. The company may be scheduled to be served by the data center. This is often used in conjunction with backup tapes. Backups can place things local to the server on tape, however, tape storage locations are also vulnerable to fire and flooding. Larger companies may send their backups to non-workplaces. This can be done by the data center through a return shot. Encrypted backups can be sent over the Internet to another data center for secure storage. For disaster recovery, various large hardware vendors have developed mobile device solutions that can be installed and operated in a short period of time. Vendors like Cisco Systems, Sun Microsystems, IBM and HP can use this system for this purpose.
OPTICO COMMUNICATION (www.fiberopticom.com) focuses on the development of fiber optic network communication product lines and provides a comprehensive solution to the fiber connectivity system components. We supply fiber optic components, such as fiber patch cord, fiber pigtail, PLC splitter, fast connector, MTP/MPO, CWDM/DWDM, SFP, FTTH solution, Data center wiring solution, etc. All the products adopt strict quality standards in the production and inspection, ensuring excellent operation performance and good product stability, and safely and reliably ensuring the long-term use of products.
For more details, pls visit OPTICO website: www.fiberopticom.com