1, data center (computer room engineering)
1.1 System Overview
The data center is an important environment to ensure stable, safe and reliable operation of various types of equipment and network systems. Fully grasp the "standardized server room" design concept, the perfect combination of intelligent technology and environmental art, the construction of a "green, environmentally friendly, comfortable" modern server room.
1.2 System Requirements
Vocational Education Park *** counts a park center room, seven monitoring rooms (1 park total monitoring room, 6 sub-control rooms), of which the park center room is located in the public *** building library building on the first floor, the park total monitoring room is located in the logistics service center on the first floor, the rest of the monitoring room were distributed in the construction of the school teaching sub-buildings on the first floor, the business school administrative building on the first floor, the provincial shipping technical school on the first floor of the first floor of the second floor. Administrative Building, the first floor of the provincial shipping technical school office complex, the first floor of the administrative office building of the School of Arts and Crafts, the first floor of the library building of the Vocational Education Center, the first floor of the gymnasium.
The data center is located on the first floor of the library of the public *** building, vocational education park *** build a unified data center for each school *** with the use of the vocational education park for network resources *** enjoyment, rational allocation and unified operation and maintenance management. Data center unified deployment of network core equipment and digital campus required by all types of servers, storage and Internet access and security equipment, storage equipment according to different schools, divided into different cabinets;
Vocational education park in the logistics service center on the first floor to establish a unified integrated monitoring and management center, is responsible for all the park's video surveillance, security and fire alarms and other centralized monitoring and dispatch management, the schools set up their own sub-schools in accordance with the management requirements. Schools set up their own sub-control centers in accordance with the management requirements, responsible for the security monitoring and duty in the area under their jurisdiction, and accept the unified management and scheduling of the total control center;
Data center, monitoring center with reference to the national standards for the construction of electronic information room construction; data center in accordance with the green energy-saving standard design, configuration of precision air conditioning and UPS uninterruptible power supply, the capacity of batteries in accordance with the power supply for two hours after the power outage. Configuration.
1.3 Design Principles
Based on the requirements of GB50174-2017 "Data Center Design Specification" for the classification of server rooms, the design is based on the nature of the use of the server room, management requirements and its importance in the economy and society to determine the level to which it belongs, and the construction of the data center of the Vocational Education Park refers to the construction of class B server room, and the monitoring center server room refers to the construction of class C server room.
1.4 Design content
The construction of the first floor of the central server room of the park includes the following eight subsystems: decoration system, power supply and distribution system, lightning protection and grounding system, UPS uninterruptible power supply system, precision air-conditioning and fresh air system, environmental monitoring system, comprehensive wiring system, fire alarm and fire extinguishing system, disaster protection system.
The construction of the monitoring room includes: decoration system, power supply and distribution system, lightning protection and grounding system, air conditioning system, disaster protection system.
1.4.1 Decoration system
Decoration effect: comfortable, bright and simple. The decoration selects green environmental protection as well as durable materials with good sound-absorbing effect, not easy to change color, deformation, easy to clean, anti-static, anti-magnetic interference, and strong fireproof performance.
The main content of the decorative part of the whole machine room area includes: microporous aluminum ceiling, anti-static floor, color steel wall and column surface, latex paint roof and wall, glass partition, door and window design and installation of the overall planning.
(1) roof
network room, fire monitoring room ceiling material 600 600 0.8mm microporous aluminum ceiling plate, network room ceiling from the floor surface net height design for 2.8m, fire monitoring room net height design for 3m.
smallpox installation before the installation of the ceiling to clean up the bottom surface of the canopy, beams and walls along the upper and brush the environmentally friendly dust paint dust treatment, precision air-conditioning refrigeration area. Precision air-conditioning refrigeration area of the ceiling bottom, beams and walls along the upper part of the insulation layer.
(2) ground
The floor of the machine room all 600 600 35mm anti-static steel edgeless movable floor, network room floor paving height of 0.4m, two monitoring room floor paving height of 0.2m.
The floor paving needs to be under the floor before the floor board surface for dust treatment. Use of precision air conditioning machine room, the need to do insulation treatment of the ground. Distribution cabinets, UPS hosts, battery cabinets, precision air conditioning, small machine equipment placed in the area, designed to use angle steel to do load-bearing mounting brackets, rack height and floor height of the upper surface.
Entrance/exit of the computer room: the entrance/exit of the computer room is paved with anti-static flooring, and do the second step or a step treatment; the closure of the 0.8mm hairline stainless steel plate decorative strips.
Ventilation floor: under the air precision air-conditioning area to install a certain amount of adjustable ventilation floor, and machine room air conditioning air supply to match the amount of air velocity should not be greater than 3m / s, machine room equipment in place should be left with a suitable outlet hole, the outlet hole is not easy to be too large.
(3) walls, columns
Network room wall design using C75 type light steel keel overhead installation, color steel gypsum composite board finish. Keel spacing is designed for 600mm, light steel keel plus U38 reinforcement keel support to ensure the strength of the steel frame.
Two monitoring room walls are decorated with environmentally friendly latex paint.
Skirting: Skirting in the machine room area using 0.8mm thick stainless steel plate veneer, the grass-roots level using high density board.
(4) Doors and windows
The entrance door of each machine room adopts 1000 2200/1500 2200mm Class A steel fireproof door (the door is reserved by the civil engineering unit), and the size of tempered glass door is 1000*2200mm.
All the external windows of the mainframe room are made of 8mm non-combustible boards for airtight treatment. Waterproof treatment is done before sealing, and opaque glass film is applied to the inside of the window glass. When the windows are closed, the external decorative windows are retained, and the internal sealing plate is decorated to meet the overall aesthetic effect of the building appearance.
(5) Thermal insulation, energy saving and dustproof
In the host room precision air conditioning area of the inner wall and C75 light steel keel, from the floor to the top of the floor surface of the finish wall are filled with 20mm thick flame-retardant rubber-plastic thermal insulation board for thermal insulation; precision air conditioning area of the floor in the floor after cleaning and dustproofing, the ground using a 30mm-thick flame-retardant aluminum foil surface of the rubber-plastic thermal insulation board for thermal insulation; in the top surface and beam surface using 20mm thick flame-retardant rubber-plastic thermal insulation board for thermal insulation. The top surface and the beam surface are insulated with 20mm thick flame-retardant rubber-plastic insulation boards, and the insulation boards are connected with special adhesive tapes.
Requirements for this project selected insulation board has a very good flame retardant, good flatness, strong thermal insulation performance, non-toxic dust.
(6) hidden part of the processing
For the hidden works in this decorative project, need to be in strict accordance with national standards for hidden part of the material requirements for the design and construction of the construction, need to take the following measures:
1, the wall part of the moisture-proofing, fire prevention and heat preservation treatment;
2, part of the non-flame-retardant materials must be painted with fireproof coating;
3, All hidden materials must be in line with the performance indicators of materials used in computer rooms, to achieve dust, flame retardant, flame retardant, will not produce static electricity, solid and durable and no pests and diseases;
4, a variety of coatings must meet the requirements of environmental protection;
5, electrostatic flooring under the alignment of the trunking, piping, bridges and sockets should be suspended on the ground on the thermal insulation layer of 5 to 8cm, should not be affixed to the ground;
6, the part that communicates with the outside of the computer room to do a good job. Part of the external communication with the machine room to do a good job of anti-rodent facilities.
(7) static electricity protection
The anti-static floor used in the computer room is made of non-combustible materials. The surface of the active floor is conductive wear layer, it is strictly prohibited to expose the metal part. Conductors in the host room and the earth for a reliable connection, there shall be no isolated conductors insulated against the ground.
1.4.2 Power supply, distribution and lighting system
According to the technical requirements, the power supply system of the server room is divided into two parts: uninterruptible power supply (UPS) system and utility system.
UPS circuit: the UPS power supply in the computer room supplies power to computer equipment, network equipment, security equipment, etc. after UPS frequency stabilization, voltage stabilization and voltage waveform adjustment, and also charges the UPS backup battery; when the utility power supply line is cut off, the UPS backup battery is discharged immediately, and uninterrupted power supply is provided to the computer equipment after UPS inversion.
Utility circuits: sockets, air conditioning, lighting, fresh air, smoke exhaust and other equipment with electrical shock and inductive and capacitive use, the different phases of the distribution of balanced loads.
Two special cables from the main distribution room were introduced as a network room, fire monitoring room dedicated power supply circuit, this part of the cable are installed by the power unit to the designated location in the room.
(1) power distribution system
According to the "General Specification for Computer Sites", the power supply parameters based on the performance of the computer allows the scope of change can be divided into three levels of A, B, C, the host room power level according to the A-level standards for design.
Distribution system frequency: 50Hz;
Voltage: 380V/220V;
Wire system: three-phase five-wire system/single-phase three-wire system.
(2) power distribution equipment
Network server room power room set up a set of utility power distribution cabinets, an ATS switching cabinet, a UPS distribution cabinets, utility power distribution cabinets with fire linkage decoupling function, the front door using glass doors, can be opened front and back to meet the server room area utility lighting, outlets, air conditioning, such as the use of the requirements of the UPS power distribution part of the server room to meet the computer equipment, The UPS distribution part meets the requirements of computer equipment and network equipment in the server room.
The monitoring room is equipped with UPS equipment to meet the power requirements of computer equipment and security equipment. Configure UPS equipment for the single building for the power supply needs of the management room equipment. The utility distribution box of the monitoring room is provided by the strong electricity construction unit.
Distribution cabinets/boxes are controlled by automatic air switches, set overload and short circuit, lightning protection, host room distribution cabinets are equipped with detection of voltage, current indication, and related indication of the alarm and other functions, as well as an independent zero, ground sink.
Distribution cabinets/boxes are introduced into the lead line are numbered, indicating the direction of the line, function, convenient control, equipment management and maintenance.
Distribution cabinets as the core of the power supply and distribution system is to ensure the safe and reliable operation of the premise of the equipment, taking into account the requirements of the future expansion, distribution cabinets are set aside a certain amount of spare capacity.
Emergency switches are required in the switchboard. When a serious accident or accidental fire occurs in the server room, it should be able to immediately cut off the power supply of air conditioning, etc., and the total utility air switch can be linked with the fire fighting system in the server room.
(3) power distribution lines
The power supply lines in the computer room area adopts the radial distribution method, classified and distributed directly to the power equipment, different categories of split-channel control. Network computer room power cables are used in the top of the cable room, floor overhead laying, and laying separately with the weak bridge, to maintain spacing, to avoid cross. Pipes to take layers of overhead layout without crossing each other, each circuit using an independent electrical pipe installation.
1, lighting, utility maintenance socket cable using flame retardant copper wire (ZRBV);
2, ordinary air-conditioning cable using flame retardant copper cable (ZRBV);
3, computers, network equipment cabinets cable using flame retardant copper cable (ZRVVR);
4, UPS, precision air conditioning equipment cable using flame retardant copper cable (ZRYJVR). (ZRYJVR);
5, utility power, lighting lines through the (KBG) conduit concealed or in the ceiling through the pipe laying.
(4) socket installation
In this project, the computer load distribution lines according to national standards and leave a margin.
(1) ordinary socket: computer room utility maintenance socket using 10A five-hole socket, utility maintenance socket installed in the wall 300 millimeters above the floor surface. Monitoring machine room TV wall set 16A three-hole socket installed under the floor, powered by the utility, utility power supply socket using conventional milky white panel.
Security monitoring room workstations according to the design of each workstation a 16A three-hole socket with grounding, powered by the UPS, UPS power supply outlets using colored panels.
(2) industrial connector socket: each cabinet in the mainframe room of the network server room adopts double-loop UPS power supply mode, the mainframe room 2-channel power supply uses 3-port 16A industrial connector to connect with 16A8-bit PDUs in the cabinet, and each cabinet is configured with 2 PDUs.
(5) Server room lighting
This project adopts the utility lighting fixtures of 600 * 600mm, 32W embedded lighting fixtures. *600mm, 32W embedded grille light panels, lamps using low-color temperature daylight-type lamps.
The machine room uses downlights as backup lighting. Backup lighting power supply system in the machine room utility power outage automatically started by the UPS system power supply to ensure emergency function.
The machine room is equipped with fire emergency evacuation lighting and safety exit indicators, lamps and lanterns are used to bring their own battery fire special double-head emergency lights and safety exit indicators, by the utility direct power supply.
1.4.3 Uninterruptible power supply (UPS) system
The power supply of the network room is designed to use a modular UPS host, the current output power of 80KW, the capacity can be expanded to 160KVA, equipped with a delay of 2 hours of storage batteries, responsible for the computer equipment in the mainframe room, network equipment and other power supply; the general monitoring center room set up in the computer room a 20KVAUPS host, equipped with storage batteries, and the main monitoring center is equipped with a 20KVAUPS host, equipped with storage batteries. 20KVAUPS host, equipped with a 2-hour battery delay, to the server room security storage and other equipment power supply, gymnasium monitoring center configuration of a 6KVAUPS host, equipped with a 2-hour battery delay, for the server room and gymnasium equipment power supply; the other single building according to the amount of equipment, according to the delay of 2 hours to configure UPS hosts and batteries, respectively, to the single building within the weak well of security and control equipment, access switching equipment, etc. Control equipment, access switches and other equipment power supply.
1.4.4 Air Conditioning and Fresh Air System
The network server room host room needs to use high-performance constant temperature and humidity precision air conditioning units to ensure that the server room air conditioning system for long-term 24-hour uninterrupted operation, and air conditioning refrigeration capacity of the air-conditioning capacity of 15% to 20% of the residual amount to ensure that the air conditioning effect. Through the power and environment centralized monitoring equipment for precision air conditioning monitoring to ensure that the server room managers can always understand the work of the air conditioning system. The placement of precision air conditioning indoor machine should meet the overall smooth airflow in the server room, the cabinet columns between the hot and cold air ducts airflow circulation mode, air supply and return without obstacles to ensure that the server room dedicated precision air conditioning reliable and stable operation. The network host room is equipped with two precision air conditioning, using downward air supply, thus reducing the distance caused by airflow pressure loss and cold air leakage loss, combined with closed cold channel to improve the utilization efficiency of cold.
1.4.5 Lightning protection and grounding system
(1) Lightning protection system
This is designed in accordance with the three-level power supply lightning protection system.
The first level of power supply lightning protection: a set of three-phase power supply lightning protector is installed at the lower end of the mains input air switch introduced into the network room and the general monitoring room.
The second level of power supply lightning protection: in the network room, the total monitoring room UPS host input were installed a set of three-phase power supply lightning protection.
The third level of power supply lightning protection: in the network room, the main monitoring room UPS host output respectively add a set of three-phase/single-phase power supply lightning protector.
Signal lightning protection: In the fiber optic introduction to the machine room end, the fiber optic metal wire and optical box to do lightning grounding. Across the computer room area of the electrical signal inputs and outputs were installed signal lightning protector.
(2) grounding system
This project adopts the joint grounding method. AC grounding, safety protection ground, DC work grounding, lightning grounding, anti-static grounding, shielding grounding and other common set of grounding devices. Machine room with ∠ 40 40 4mm angle around a set of anti-static protective ground, the metal casing of the computer equipment, UPS metal casing, metal floor bracket, and metal frames, facilities piping near the connection to the protective ground, the use of wire diameter of not less than 6mm2, at the same time, and the safety of the machine room grounding, lightning ground to the shortest possible distance to form a structure connected. Network room host room cabinet below the use of 30 * 3mm copper rows composed of equipotential grounding network, safety grounding, lightning ground to the shortest possible distance to form a structure connected to the 50mm2 copper core wire lead to the joint grounding terminals.
The machine room grounding system for the joint grounding method, the use of joint grounding piles, need to test the joint grounding piles, grounding resistance R ≤ 1 Ω, test qualified before use.
1.4.6 Comprehensive wiring system
Network server room host room comprehensive wiring design is divided into servers, storage devices, network equipment, three parts to consider.
Between the server, storage devices, network equipment with the same brand of Category 6 cabling products. The line direction is: server equipment → cable channel → network cabinet.
Network server room host room **** deployment of 28 server cabinets, configuration of 50 24-port Category VI distribution frame, each distribution frame full allocation.
Comprehensive wiring system for each column of cabinets using the top line trough routing to the equipment terminals, the implementation of the integrated wiring system has a strong flexibility to meet the needs of a variety of different equipment networking and applications, the opening of all the equipment and changes do not need to change the system wiring, just make the necessary jumper management can be to support all the current data and voice equipment manufacturers of the system.
1.4.7 Closed channel system
Cabinet area using hot and cold channel layout, the channel at both ends of the entrance to the installation of closed door, installed above the channel closed top plate, the formation of hot and cold channel area closed. Physically isolated from the mixing of hot and cold air, monitoring refrigeration waste, thus significantly improving the efficiency of refrigeration.
1.4.8 Power and Environment Centralized Monitoring System
The system can carry out comprehensive management of equipment in the server room, monitor the status and parameters of various equipment, and diagnose the condition of equipment components. More importantly, it integrates the management measures and monitoring control of the server room. The main monitoring contents of the system are as follows:
Power distribution monitoring subsystem;
UPS power supply monitoring subsystem;
Precision air conditioning monitoring subsystem;
Fresh air blower monitoring subsystem;
Water leakage monitoring subsystem;
Temperature and humidity monitoring subsystem;
Fire alarm monitoring subsystem;
< p> Video monitoring sub-systemAccess control sub-system
Monitoring of power supply and distribution equipment
The system installs intelligent power meters to monitor the current, voltage, power factor, three-phase balance rate and other parameters of the total utility power of the server room, the UPS output distribution cabinets, and the UPS header cabinets, and installs switch state acquisition modules to monitor the main distribution switches of the distribution cabinets.
UPS power supply equipment monitoring
UPS monitoring in the network room. Using RS-485 bus communication, through the UPS manufacturers to provide communication protocols and communication interfaces for comprehensive system monitoring and diagnosis of UPS. Once a fault occurs, the automatic pop-up alarm screen, through the multimedia or telephone voice alarm, to inform the relevant personnel.
Precision air-conditioning equipment monitoring
In the network room to monitor precision air-conditioning. Precision air conditioning using RS-485 bus communication, through the precision air conditioning manufacturers to provide communication protocols and communication interfaces to monitor the air conditioning operating status and parameters. Once a fault occurs, the automatic pop-up alarm screen, through the multimedia or telephone voice alarm, to inform the relevant personnel.
Fresh air system monitoring
In the network room to monitor the working condition of the new air conditioner, using the control module to control the switch of the new air conditioner.
RS-485 bus communication is used. Once there is a fire and other alarms occur, it can be linked to shut down the new fan, and the staff can also remotely control the switch of the new fan as needed.
Water leakage system monitoring
Leakage monitoring air conditioning installed in the network room around the leakage, this leakage detection system uses a positioning detection system to monitor the leakage of water around the precision air conditioning.
Because the server room leakage potential is mainly precision air conditioning, so in the precision air conditioning around the underfloor arrangement of leakage sensing cable a circle, through the alarm controller will leakage alarm signal to the monitoring host.
Temperature and humidity system monitoring
Installation of temperature and humidity sensors in the network room to detect the temperature and humidity of the entire room, the monitoring system through the collection of temperature and humidity sensors detected by the temperature and humidity information, real-time monitoring of the temperature and humidity conditions.
Fire alarm system monitoring
Take all the way to the fire control host issued by the alarm signal access to the industrial control host, the fire alarm system monitoring, the system will pop up the alarm screen, through the multimedia voice, telephone voice alarm, inform the duty officer, to realize the linkage alarm and open the door.
Video surveillance subsystem
Installation of dome cameras at the main entrance of the network room, mainly responsible for the main entrances and equipment area of the image monitoring, the entire room to achieve a dead-end all-round coverage. Room monitoring equipment and campus monitoring video management platform to be unified brand, in addition to the network room has a monitoring probe to collect the video signal format conversion and compression storage, support for real-time booking video, alarm video, screen settings, remote call, Web interface playback and other basic operations. The video resolution is not less than CIF, compression format MPEG-4 or H.264. video storage not less than 1 month.
Access Control Subsystem
Access control system is set up at the main entrance of the network room, and the access control is connected to the centralized monitoring system, so that there is a record of people entering and leaving the network room. The access control system is connected to the centralized monitoring system, and there are records of people entering and exiting the network room. Access control and fire linkage, when a fire occurs, the escape channel access control automatically cut off the power to open the door.
1.4.9 Disaster Protection System
Load-bearing treatment
Under the premise of meeting the load-bearing requirements of the server room, specifically refer to the "Data Center Design Specification GB50174-2017" for the requirements of the building and structure. If the load-bearing of the server room floor cannot meet the requirements of the building and structure, the civil engineering unit needs to do the reinforcement treatment. Due to the large number of equipment cabinets in the server room, the equipment in the cabinet is also more centralized, need to consider the UPS battery load-bearing processing, UPS host load-bearing processing, distribution cabinets, precision air-conditioning cabinets load-bearing processing, etc., the use of angle steel and other welded production of load-bearing fixed brackets.
Waterproof, anti-rodent bite treatment
air conditioning under the ground using waterproof paint to do waterproofing, and good restoration of protective measures.
Waterproof paint waterproofing treatment for water sources in the computer room, do a good job of restoring protective measures.
The external wall and the external glass window using waterproof coating to do waterproofing, and do a good job of restoring protective measures.
In the precision air conditioning floor under the waterproof ground, using waterproof coating to do waterproofing and good restoration of protective measures.
Other water supply and drainage pipes in the computer room area using waterproofing, and do a good job of restoring protective measures;
All the cables in the computer room through the metal trunking and metal steel pipe overhead laying.
Seal the holes at the junction of the computer room and the outside world.
In the computer room under the floor to set up electronic rodent repellent.