The campus data center is a platform for the unified management of various structured data in the digital campus, the realization of various application system data resources sharing and exchange of application services, and is the central core of the digital campus. Under the new situation that education and teaching depend on digitalization and informatization with higher and higher requirements, there are widespread campus data centers with dilapidated environments and messy management, and a large number of expensive and luxurious campus data centers that are increasingly complex and advanced. ? It is time for us to conduct a periodical summary thinking on the facts: What is the actual status of the primary and secondary school data centers at this stage? What is the new actual demand? What standard should the campus data center be built into? How to "pragmatically frugal, standardized and effective, moderately ahead" to build a new stage of campus data center? During the summer of this year (2013), our school (Nanjing No. 12 Middle School) upgraded and upgraded the campus data center that has been in operation for 11 years. The project has repeatedly demonstrated the previous plan and cost, coordinated multiple meetings during the preparation phase of the project implementation, adjusted some of the strict requirements of standardization and standardization during the project implementation process, and produced the management files in the later stage of the project. The author has some explorations and insights to share with you . 1. Overview of the school and campus data center: Nanjing Twelfth Middle School Zhongshan North Road Campus currently has more than 1,500 students and more than 180 faculty members. There are 9 buildings (six buildings in the Republic of China are evaluated as cultural relics). In 2002, the campus network was planned to be built, and the campus data center was built. It used 100M access network equipment and super five types of network wiring products. The initial total network information points were 400, distributed in 9 buildings, and the school data center is located in the teaching building. The third floor. During the 11 years of operation of the data center, due to the needs of the school's infrastructure and renovation, two more cabinets were added in 2006, and core switches and some access layer switches were replaced in 2012. 2. Analysis of current status of campus data center: The Nanjing 12th Middle School Campus Data Center was built as early as 2002. At that time it was relatively advanced, and it made an important contribution to the development and guarantee of the school ’s education and teaching. However, due to the early construction period and the lack of standardization awareness at the initial stage of construction, no effective measures were taken in such aspects as the division of computer room functions, comprehensive wiring specifications, lightning protection and grounding of strong power lines, air temperature and humidity control, and VOC monitoring and adjustment. With the passage of time, the first-mover disadvantages of the school ’s data center have gradually emerged. The aging of strong power lines, the entanglement of weak current lines, and the dusty and humid environment. Although all the switching equipment was replaced last year, failures still occur frequently, which seriously affected the school. Network data exchange efficiency. At present, the campus network data center is mainly responsible for the two major functions of exchange of teaching resources and Internet access services within the school. The concurrency point of network users generally does not exceed 120 people. Third, the campus data center upgrade system solution: In order to improve the efficiency of the school's data center and change the status quo, the school has invested more than 100,000 yuan to comprehensively transform the data center in terms of integrated wiring, equipment rooms, circuits, temperature control, lighting, and security. While being able to fully meet the needs of the school's modern development, it strives to avoid excessive luxury equipment and create a "pragmatic and frugal, standardized and effective, moderately advanced" campus data center. (1) Strictly divide the data center functional area. In the original data center, equipment cabinets and operation areas were mixed, and there was no strict division between the areas. Network administrators often need to enter the room to operate, so the data center is basically in a semi-open state, and factors such as ambient temperature, humidity, and dust are difficult to control. In this transformation, the data center is divided into "equipment storage area" and "auxiliary management area", the original data center is relatively closed into "equipment storage area", and access cabinets, switch cabinets, service cabinets and monitoring cabinets are set up. Place network equipment such as switches and servers. Open the window between the original network administrator's office and the data center to build an "auxiliary management area", and connect multiple servers to the "auxiliary management area" with KVM extension cables. Strict functional area division allows network equipment to be placed in a relatively closed space for more effective environmental regulation. (2) Establish a temperature and humidity control exhaust system. This transformation introduces an intelligent fresh air system controller for air quality monitoring temperature and humidity display, built-in high-sensitivity semiconductor air quality sensor, real-time digital display of indoor total organic volatile matter VOC concentration, temperature and humidity. The VOC concentration and temperature and humidity alarm points in the air quality of the data center can be set manually, and the exhaust equipment can be automatically turned on in real time to adjust the indoor air quality. , The device uses a three-color backlight to display the current air quality level. To a certain extent, it can intelligently adjust the environmental quality in the network management center, which is conducive to the overall operation of the equipment and extends the service life of the equipment, thereby saving energy, protecting the environment, intelligently, and effectively managing the data center. (3) Strictly standardize the line transformation. During the initial construction of the data center, due to the weak awareness of regulations, the strong and weak lines were crossed and mixed, and the lack of a lightning protection grounding system left a hidden danger for the safe operation of the equipment. In this transformation, the original weak current lines in the room are bundled according to category and floor, and then connected to the corresponding cabinet after entering the trunking. All the original strong current lines are demolished, re-entered into the pipeline, and (3 + 1) integrated secondary lightning protection devices are installed at the incoming end of the empty unpacking wiring, and the ground wire of the lightning protection device is connected to the equipotential bronze medal in the equipment room . Install a 30 × 3mm equipotential grounding copper bar under the anti-static floor of the data center. Connect the two-pair copper medals to the anti-static floor through a ground wire, and each cabinet is connected to the equipotential grounding copper bar, and the grounding copper The row is connected to the grounding backbone of the entire building through a 16-square grounding wire. In this way, the data center has a complete and good grounding system. Even if the power supply voltage leakage or static electricity occurs occasionally in the equipment room, people entering the equipment room or operating the equipment can completely avoid the risk of electric shock. In addition, when encountering lightning, strong power sources near machinery, and spark interference, a good grounding system in the equipment room can also play a role in protecting equipment. (4) Build a new type of dynamic monitoring system for security monitoring and network management. The original data center has neither monitoring probes nor infrared alarms. It belongs to the blind corner of school security and has a large hidden safety risk. In the transformation, a digital million high-definition low-illumination hemisphere camera was added, and a 3.6mm wide-angle lens was selected to support POE power supply. After the port is mapped, you can watch the high-definition pictures through the network on the computer where the monitoring and management software is installed, and it has the functions of local recording, storage, real-time playback, and video recording. In the front of the hemisphere, infrared lights, IR dual-filter switchers and photosensitive devices are added. Due to the excellent low-illuminance performance of the camera, not only the ability to sense visible light but also the infrared light is strong. Because of this, the machine is greatly saved The number of infrared lamps extends the service life of infrared lamps and reduces power consumption. After the transformation, install a surveillance camera to view or replay the data center's dynamics in real time. It not only realizes more convenient and safe remote monitoring of the data center, but also realizes the dynamic video recording of the daily maintenance and configuration work of the network administrator. (5) Construct a green energy-saving lighting system. The original data center uses four lights such as daylight, which have high energy consumption and poor results. In the transformation, the intelligent control LED lighting system was introduced. The data center lighting uses four ceiling-mounted aluminum LED lamps, acrylic lampshades, and three positive white light strips. Users can use the remote control to turn on the number of light strips of each light according to their needs, which saves electricity consumption to a certain extent, and more Energy saving and environmental protection, reasonable and effective use of resources. Comparison chart before and after transformation: (VI) Pay attention to the file management of the data center: There are many types of data center equipment and complicated line connections. If you do not pay attention to the preservation and management of data, it will cause unnecessary trouble for future maintenance and rebuilding. This renovation specially added a data storage cabinet, from the management system (the network center computer room should have a complete management system, and the system should be on the wall), drawings and data (the center computer room construction process should keep all construction files and drawings intact Data, and indicate the relevant information), asset management (the central computer room has complete records of the various types of equipment purchased, so that the books are consistent), these three aspects of separate storage data, to maximize the data center data management. Fourth, the construction of campus data center: With the deepening of education informatization, more and more schools are beginning to focus on the construction of data centers. It integrates multiple professional technologies such as construction, electrical, installation, and network. Many factors in the process of data center construction directly affect the final result. In the course of this data center upgrade and transformation, I deeply realized that the advancement of the project requires a wealth of experience in budget design, project implementation and coordinated management. (1) Moderate budget and focus on actual results. In recent years, many schools have placed a heavy emphasis on hardware and software on education investment. Educational equipment must meet the teaching needs, but there is no need to waste extravagance and engage in face-saving projects. The school information equipment should go out of the misunderstanding of seeking the best and perfecting and over-leading. In this transformation, most of the budget is used for the standardization of the environment, focusing on the transformation and application of old equipment. The original two Inspur servers configured seven years ago in the school were transformed into "campus network firewall gateway" and "Internet behavior and flow control management" equipment after dust removal and system reinstallation. ; The original (UPS) uninterruptible power supply equipment that was configured 11 years ago has been professionally tested and renovated, and the host is retained, and the battery is only replaced as needed. Only these two budgets saved nearly 100,000 yuan. In addition, according to the current status of the school and in accordance with the relevant national standards, the equipment with reduced practicality was selected in terms of temperature and humidity control equipment, in order to seek practical results in the specification, which also greatly saved the total cost of the project. (2) Project implementation focuses on standardization and standardization. Computer room construction is a systematic project. It is necessary to start from work needs, put people first, meet functional needs, give consideration to appearance and practicality, provide a safe operation space for equipment, and create a good working environment for staff engaged in computer operations. During the progress of this project, from design, implementation to final acceptance, we strictly refer to the relevant national standards: GB50606-2010? "Intelligent Building Engineering Construction Specifications" ?; GB / T50314-2006? "Intelligent Building Design Standards"; GB ? 50339-? 2003? "Quality Acceptance Code for Intelligent Building Engineering"; GB50311-2007 "Code for Design of Integrated Wiring System Engineering of Buildings and Building Groups"; GB50312-2007 "Code for Acceptance of Integrated Wiring System Engineering of Buildings and Building Groups". (3) Implement the supervision system of the person in charge of the project. In the early stage of project advancement, the district technical equipment office as the main body of procurement implemented the project leader system. According to the current status of the project, the Nanjing Municipal Equipment Office hired experienced professional teachers from the district information technology equipment center group as the project leader, who was solely responsible for the design and construction supervision of the project, which effectively avoided the lack of experience of the teachers in charge in some schools. This has led to a lack of supervision of the project. During the progress of the project, according to the progress of the project, the person in charge and the contractor jointly completed a series of process data such as the project start report, project schedule, material and equipment entry inspection form, process quality inspection form, and engineering change order. The project supervision has been put into practice, and there are rules to follow and plans to check, which effectively guarantees the efficient and high-quality advancement of the project. For example, for concealed projects, not only to fill in the process quality report, but also to take pictures and leave pictures, to leave a basis for future inspection and acceptance. (4) Do a good job in coordinating the project. For a high-quality and high-standard data center construction project, from the perspective of engineering technology, how to reasonably arrange the relationship between various types of work, processes and majors is directly related to the quality and quality of the project. Doing a good job of coordination can maximize the avoidance of time delays or quality problems caused by time conflicts and rework. In the early stage of the project, the project leader held three coordination meetings with the school principal, information center, general affairs office and construction company to discuss the schedule and network disconnection time (especially the conflict between the project construction and school holiday office activities), The construction safety (especially the load bearing of the floor of the old building, the manufacture and bearing of the window beams of the wall), the safety of the water and electricity (especially the distribution load of the data center and the lightning protection grounding) and the disposal of construction waste are clear. The division of labor has been achieved and the plan has been reached; and at each process node in the project implementation process, the project leader and the company ’s project manager will make a summary and coordinate the next stage of work, effectively guaranteeing the progress of the project. Finally, I would like to especially thank the technical department of the Educational Equipment and Work-study Office of the Nanjing Municipal Education Bureau for the strong support and care for this project. Before and after the implementation of the project, experts were arranged to visit the site on many occasions, from the scientific prospectiveness of the technical plan to the management of the project implementation. It provides important guidance in terms of standardization and Other aspects. Special thanks to the Gulou District Education Technology and Equipment Office for their trust and strong support. The school information director is given the identity of the project authorizer to take full responsibility for supervising the project; at the same time, in the key links of the project, in response to the school's application, many experts are coordinated to guide and help. ???? Also particularly grateful to the school leaders for their comprehensive coordination and support. Before the project was implemented, the school organized the schedule of the project schedule and school activities, the electricity consumption arrangement, and the various departments (logistics, infrastructure, teaching, examination office) Etc.) Comprehensive arrangements such as cooperation. ???? Thank you to the contractor of this project, Nanjing Erxun Intelligent Technology Co., Ltd. for the implementation of standardization and standardization; they can put pressure on themselves to implement high-standard process and key internal company acceptance mechanisms to ensure the project ’s High-quality completion; the company's actual site of the project and the bidding documents are relatively vague, and it can be invested at high cost and high quality. This is commendable. Thank you all. Conclusion Although the data center is small, it is the core of the campus network operation and the key to the effective exchange of data within the network. Today, education and teaching are highly informatized, which directly affects the efficiency of school teaching and office work. Although the campus data center has such an important position, it is necessary to avoid over-equipment and excessive expansion of the function and scale of the school data center. Accurate analysis and reasonable positioning of school data exchange services are the prerequisites for the construction of campus data centers. On this basis, strictly control the relevant national standards, carry out the preliminary design of the computer room environment, select the appropriate facilities and equipment to implement the rigid requirements of each school network operation and maintenance, pay attention to every detail in the construction management, and create a "pragmatic and frugal, A standard, effective, and moderately advanced "campus data center is the goal that every equipment person should pursue. Yard Pong Game,Yard Beer Pong,Giant Beer Pong Game,Giant Beer Pong Game Set Ningbo Gibbon Sports Culture Co.,Ltd , https://www.gibbonsports.com