On the planning and Design of Network Center room

Absrtact: Center room is the core and hub of the campus network, is the center of data exchange and data storage center, how to strictly in accordance with national standards, referring to international advanced norms, the construction of a modern, standardized computer room, for the reliable operation of computers to provide a stable environment, become increasingly concerned about the subject. Campus Network Center computer room environment, including hardware and software environment, is a multi-disciplinary comprehensive technology, in order to ensure that all kinds of intelligent equipment and computer system stable and reliable operation, computer room environment must meet the computer and other microelectronics equipment and staff of the temperature, humidity, cleanliness, electromagnetic strength, shielding, leak prevention, power quality, vibration, Lightning protection, grounding and security requirements. Central Computer Room construction project is a comprehensive industry which relates to air-conditioning technology, power supply and distribution technology, anti-jamming technology, anti-thunder and anti-pressure technology, purifying technology, fire-fighting technology, security technology, building and decoration technology and so on.

1. Project Introduction

The basic project of the whole computer room includes:

• Room Decoration System
• Power Distribution System
• Lightning Protection Grounding System
• Air conditioning and fresh air system
• Fire Fighting system
• Integrated Cabling System
• Access control system
• Closed-circuit Monitoring system
• KVM Systems and more.

Computer room planning can be divided into four main parts:

• Main room: Used to place UPS power host and various server equipment and other weak system equipment installation area. The area is 105.3 square meters.
• Wiring room: Used for placing network cabinets, network equipment, optical wiring racks, network wiring racks and other equipment installation areas. The area is 12.3 square meters.
• Air cylinder: Used to place fire fighting equipment such as gas cylinders. The area is 14.4 square meters.
• Power Distribution Room: Used to place batteries, mains distribution cabinets, UPS distribution cabinets and other distribution equipment. The area is 18.6 square meters.

2. Design Principles

Computer room construction project, to take into account the principle of both human and machine, the design should be operating conditions, safety and reliability as the primary consideration, in order to ensure the reliability of the system operation, the design life of the system, information security requirements on the basis of ensuring the operating environment of operators.

• Advanced: Based on a high starting point, the use of advanced, mature, practical technology. The software and hardware configuration of each subsystem in Computer room system adopts modularization, open structure and integration to realize information resource sharing, improve equipment utilization rate, reduce energy consumption and realize scientific computer room management.
• High safety and reliability: In order to ensure that the room can provide users with continuous uninterrupted service, the room must have high reliability. The system design should minimize the existence of single point of failure. Machine room internal computer system involves confidential information, need to ensure the safety of the computer room, must have a video surveillance system, access control system and other security systems to ensure that the user's equipment and data are not infringed.
• Scalability: Due to the changing demands of information network system and the continuous improvement of technology, the change of resource needs should be considered in construction construction so as to make the whole system flexible and scalable.
• Easy management and maintenance: Through the use of advanced and reliable management tools to achieve high-quality system management, in order to save human resources, real-time monitoring, monitoring the entire center of the operation of the computer room, voice alarm, real-time event recording, quickly determine the fault, improve reliability, simplify the maintenance of the computer room management staff.
• High-performance price ratio: In order to ensure the high reliability of the machine room on the basis of the machine room material products, equipment selection should be reasonable choice of materials and equipment, high performance and price ratio design room, to provide high efficiency and benefit.
• Comfort: The design of the room for air conditioning, lighting, sound and environmental optimization and adjustment, for managers to provide a comfortable working environment.

3. Master Plan

The overall planning of the computer room is in accordance with the standardized process, large-scale operation, high-quality, rapid planning room engineering construction program. The overall construction plan of computer room consists of room decoration system , power supply and distribution system , air conditioning system , Fire protection system , Lightning protection grounding system , communication system , Computer room monitoring System and KVM system , including eight parts, including the whole process of the computer Room project: From the pre-planning site selection, to the design and construction of the later internal system, from the overall management of the whole project, to the later commissioning, opening, from the pre-user training, To the maintenance and maintenance of the later stage.

4. Detailed Design

4.1 Room Decoration System

Room decoration system, is the basis of the entire computer room. It mainly plays the role of functional zoning and ensuring the environment of the computer room. Can be divided into electromagnetic shielding system, anti-static flooring system, dust-proof smallpox system and other decorative four subsystems. All materials used in this scheme must be in accordance with international standards [1-2] or domestic quality standards. All materials should be environmentally friendly, flame retardant, non-toxic, fire performance is good, safe and durable, not easy to deformation, beauty does not change color, not dust, easy to clean, sound absorption effect, anti-static, anti-electromagnetic interference and other performance.

4.2 Air Conditioning system

Air conditioning system is the guarantee of the operating environment of the engine room. Computer host and communication equipment is a high-precision electronic equipment, the room environment has strict requirements, of which the most important is temperature, humidity and cleanliness. That is the so-called "three-degree" requirement.
According to the actual situation of the engineering site survey, the main engine room is designed for air-cooled wind-cooling type. The use of 1 sets of 35KW international brand precision air-conditioning and 2 sets of 5 industrial-grade general cabinet-type air-conditioning is responsible for the host room and network distribution between the temperature and humidity adjustment, precision air-conditioning use of the bottom of the wind, the top return. In order to ensure the stability and reliability of the air conditioning system in the room, 2 units of 5 ordinary cabinet-type air conditioners are used as backup to ensure the safe operation of the equipment in the area.

4.3 power supply and distribution system

The Power distribution system is the backing of the high availability of the whole machine room. Computer and network communication equipment after the service without a long-term stable power supply system to ensure that the computer and network communications equipment and related peripheral equipment normal operation, will inevitably cause serious consequences.
The power supply and distribution system of computer room is a comprehensive power supply and distribution system, in this system not only to solve the computer and other microelectronic equipment, but also to solve the power problems of other equipment.
XX College Zhongshan Campus Network Center computer room distribution system design specific as follows:
1) room socket in two kinds: uninterruptible power supply (UPS) power of the computer host and important communications equipment dedicated sockets, mains direct power auxiliary equipment with standard sockets.
2) in the mains distribution box, mainly including air conditioners, lighting and maintenance sockets in the room power distribution, should be separate circuit design, each circuit set up a separate power switch control.
3) in the room set UPS distribution cabinets, mainly responsible for computer power equipment, emergency lighting, safe export and other power supply, distribution mode using radial type.
4) Each cabinet location in the host room provides 2 UPS power-supply sockets, UPS through the distribution box for each machine enclosure provide a UPS circuit. The circuit adopts zrbv-3x4mm2 flame-retardant wire, using 25A air-open control. All these sockets are installed under the floor and do the elevated treatment, the corresponding anti-static floor must have outlet.

4.4 Fire Fighting system

Fire protection system, is the whole computer room safe operation of the shield. Fire alarm using smoke detector and temperature sensing detectors, detectors installed in the ceiling and the movable floor, the two combined use to improve the reliability of the alarm, fire automatic detector can issue an alarm signal, controller display alarm detector location. The fire extinguishing system uses seven fluorine propane (FM200) automatic gas extinguishing system.
The project is divided into 2 protective zones (i.e.: Power distribution room, host room and wiring room), but also equipped with gas cylinder storage room, seven fluorine propane can be centrally placed between cylinders to achieve three layers of have been supervised (i.e. ceiling, floor and use space), three-dimensional fire extinguishing system.

4.5 Lightning Protection Grounding system

Lightning protection grounding system is the guarantee of the safe operation of the whole computer room. The protection of lightning overvoltage and electromagnetic interference in computer room facilities is an important technical means to protect communication lines, equipment and personal safety, and is an indispensable technical link to ensure the smooth communication lines and safe operation of equipment.
A complete lightning protection system consists of three areas: direct lightning strikes, protection against lightning strikes and grounding systems.

4.6 Communication Systems

Communication system, is the nerve center of the whole room. The signal transmission between the computer and other microelectronic devices and the "connection" between the room and the outside world depend on the stable communication system. Mainly includes structured cabling system. Network Center computer Room and operation, monitoring office using six types of unshielded twisted pair, according to its functional area design information points, and consider the reserve margin, central room wiring in the distribution between wiring, wiring and host room through the floor to set up a line groove connection. Machine room static floor under the laying of galvanized iron trough, galvanized steel pipe, metal distribution box, etc., take the next line way. All pipe grooves are made of high-resistance, requiring good grounding.

4.7 Computer Room Monitoring System

Computer room monitoring system is the engine room operation "Guardian god". Ensure that "conformal" and "double insurance" are achieved. This room uses the digital hard disk recording system, realizes the 24 hour security monitoring to the center room. Structure using b/s structure, using decentralized monitoring, centralized management. Unified control software system by central control software platform. Each software system is independent of each other, in the case of one of the software system failure, the remaining systems can continue to work normally.

4.8 KVM System

The KVM system enables the "one-stop" management of various servers and network devices in the central room. and support of the data interface business to offer different solutions for different customer needs.

4. Concluding remarks

The construction of general basic transmission platform needs to take into account the combination of mobile voice and data service, the rapid development of broadband service, streaming media business and 3G business together. Although traditional SDH technology is becoming more and more difficult for business development needs, but it is still the main source of revenue for operators, so in the selection of technology to protect the original SDH equipment investment, but also must ensure the sustainable development of the network. ASON is to comply with this request, Guangzhou CTT can find a balance point.

On the planning and Design of Network Center room