What should I pay attention to when the rainy season comes?

[Enet server Channel Report] The data center is a back-end architecture that supports the normal operation of the entire IT system, including multiple IT resources such as computing, storage, and network. It is precisely because of the importance of the data center position in the data center and its important role in modern social life that the security and persistent and stable operation of the IT data center have become a matter of great concern. However, the magnitude 9 earthquake in Japan in March 2011, the torrential rain in Beijing 7-21 in 2012, and the magnitude 7 earthquake in ya'an in Sichuan in April 20, 2013 have brought catastrophic trauma to the data center, this once again raises concerns about the security of data centers.

On July 6, March 2011, a magnitude 9 earthquake occurred in Japan. The mainframe and traditional servers in multiple urban areas were damaged, server cabinets were tilted to the east, metal boxes were deformed, and even some mainframe cables were exposed. On July 21, 2012, beijing suffered heavy rain, causing a flood in Fangshan, and the city's economic loss was nearly 10 billion yuan. On July 6, April 20, 2013, an earthquake of magnitude 7.0 occurred in ya'an City, Sichuan Province, causing different degrees of loss to the data center. When the data center is completely down and unable to work, the difficulty of rescue work can be imagined.

The flood season is approaching, and the Beijing Flood Control and Drought Relief Emergency Headquarters will release security defense measures for multiple rainy seasons in advance. Compared with the southern region, the rainfall in the Northern Region (Inner Mongolia, Heilongjiang, Beijing, Hebei, and so on) is relatively stable, but it is not ruled out that serious rainstorm attacks (such as the large rainstorm hit Beijing on July 21, 2012 ), we still need to take measures to protect the security of IT data centers. We should pay special attention to the rainy regions in the South, such as Guangzhou, Shenzhen, Chengdu, and Chongqing, because they have multiple data centers, it has already become an important information data processing center in China. If these regions are affected by natural disasters, their losses will be several times or even dozens of times the loss of rainstorm disasters in Beijing 7-21.

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In the face of rainy seasons, what aspects should we pay attention to in the IT room and office equipment to avoid unnecessary economic losses? The author collects a large amount of data from the data center and summarizes the following aspects, hoping to help it builders and O & M managers warn and defend against the rainy season, minimize the frequency of accidents and avoid unnecessary economic losses.

1. waterproof

There are a large number of precision and valuable computers and network equipment in the data center. In general, the value of devices in data centers is several millions or tens of millions, and some even hundreds of millions. In the event of a water leak accident, equipment damage and information loss may occur to users, it brings huge and even irrecoverable economic losses.

Reducing the pressure of air conditioning water supply channels in the data room is the key to solving potential water leakage risks. The water supply system for the air-conditioning humidifier in the data room selects the solenoid valve for small traffic and a very small water supply pipe. Its purpose is to control the flow of water and prevent the splash of water. Through the analysis of the water supply system of the air conditioning humidifier in the data room, we believe that the water supply pressure of the air conditioning tank in the data room does not need to be too high. On the contrary, the pressure of the air conditioning water supply pipeline in the data room is reduced, this reduces the pressure on valves, joints, elbows, and pipe walls in the water supply pipeline, and increases the safety factor, which is conducive to the safe water supply of air conditioners in the equipment room.

2. Lightning Protection

With the widespread application of micro-electronics network equipment, the problem of lightning protection becomes more and more important. Due to the features of high density, high speed, low voltage and low power consumption, microelectronics is very sensitive to various electromagnetic interference, such as lightning overvoltage, operating Overvoltage of power system, electrostatic discharge, and electromagnetic radiation. If the protection measures are ineffective, the system may suffer significant losses anytime, anywhere.

Generally, the network integration system is composed of the master server and the central switch and each sub-switch, as well as the routers, servers, and a considerable number of terminals. The central switch in the host room is connected to the sub-switches through the WAN router and through the optical fiber. The sub-switches are connected to the user terminals through the hub. In order to protect the electronic network equipment in buildings and buildings from lightning damage or minimize the damage caused by lightning strikes, the overall lightning protection scheme should be designed.

1) UPS Power Supply System Lightning Protection

The UPS uninterrupted power supply equipment in the IDC room is the only important equipment used to provide a stable, reliable and high-quality power environment for all power equipment in the IDC room, in addition, it is the main way for mains supply to input data centers, So we focus on the protection of the power supply system on the ups uninterrupted power supply.

Two levels of input lightning protection are provided for power distribution cabinets and UPS power supplies in the IDC room. Level 1 Protection: Install a three-phase power Referer (single-phase power Referer) in front of the Power Distribution Cabinet of the data center ). Secondary protection: Install a three-phase lightning arrester (single-phase Lightning Arrester) in front of the UPS power supply ). Level 3 protection: Power Protection sockets are installed on important devices.

2) Communication System lightning protection and overvoltage protection

Communication System lightning protection includes communication lines from the outdoors to the household. The main lines include network communication lines, leased lines, microwave communication lines (antenna feeders), and video lines; according to your data center, signal lines can be transmitted using optical fiber cables, so protection is not required, but the two ends of the optical fiber cables must be grounded. If there is an optical terminal, it must be protected. If no optical fiber is selected, select the lightning protection device based on the signal line type.

3) Installation and wiring

The lightning protection device is used to absorb and discharge the lightning current. The Referer is connected in series/in parallel between the protected device and the signal channel. The input (in) of the signal Referer is connected to the signal channel, and the output (out) it is connected to the protected device and installed close to the protected device, and cannot be reversed. It is connected to the ground line of the lightning protection device and the lightning protection system reliably. The shorter the wiring, the better, the maximum length cannot exceed 1 m.

3. shockproof

In addition to waterproofing and lightning protection, earthquake prevention measures should also be taken into account during data center construction. Shock Absorber must be used to reduce the damage caused by earthquakes because of safety and stability. The following are shockproof devices used in most data centers.

1) the seismic slide is located at the bottom of the rack of the data center. It can be moved during an earthquake, rather than fixed on a building, to reduce losses.

2) The internal floor shockproof bracket is a kind of equipment room floor shockproof bracket. The height is adjustable and can be fixed at any position. The base can be fixed with the ground to increase the stability of the rack.

3) shockproof cabinet: The shockproof cabinet has a dual frame shockproof structure. The column and the gap are separated. The "shock absorber" installed between the two can absorb the seismic energy and reduce the vibration of the Cabinet. Shock absorber is a two-Segment High-Performance shock-absorbing rubber that can be modified. In small and medium earthquakes, it is soft and hard in large earthquakes.

4. UPS Power Supply

In routine applications, if the ups or ups battery is damaged and the ups battery is not replaced, it often occurs. In the event of a power failure, all network devices are immediately shut down, which seriously damages network devices, especially NAS storage devices, which may cause data loss and damage. In addition, the sudden power failure will have a huge impact on the server hard disk in the data center, which will greatly reduce the hard drive life.

Some people think that the UPS system can be used only when the power supply is interrupted, in fact, if the old-fashioned power supply lines or remote suburban areas with unstable mains voltage are directly connected to network devices and servers, the unstable voltage may cause damage to related hardware. The mains supply is introduced to the ups, and then the ups provides power for the network equipment. In this process, the ups plays a stable role in voltage, which can avoid frequent faults of network equipment.

5. Air conditioning and cooling

From the perspective of data center management, common floods and Preventive Measures in data centers are even more essential. For data centers with strict environmental requirements, once a flood accident occurs, equipment damage and information loss may occur to users, resulting in huge and even irreparable economic losses. In addition to the natural disasters in the summer flood season, there are still many situations that may lead to data center floods. IT managers need to pay more attention.

① Due to the small slope of the drainage pipe, thin pipe, corrosion and blockage, the drainage is not smooth; ② the hose fasteners connected to the humidifier are broken; ③ the fast connection of the upper pipe is poor; ④ Ceiling Air Conditioning Water Board overflow; ⑤ the room temperature is low, outdoor high humidity fresh air is directly sent to the room, the original items in the room, computers, movable floors, partitions are all exposed; 6 in the room, add a partition in the cement silo and wall, cut off air leakage, and expose water and frost between the partition and the exterior wall.

Defense Measures:

1) alarm on leakage of air conditioners;

2) All cabling are in the cabling slot, and the cabling slot is about 50-100mm from the ground;

3) air conditioners are placed in the air-conditioning area, and are separated by a "dike" under the active floor from the cabinet area, with floor drains in the air-conditioning area;

4) due to the use of constant temperature and humidity devices in the IDC room, heating systems should not be used in general cases. However, when heating must be used in particularly cold areas, water tanks should be set up for heating on the one hand, in case of heat leakage, it will also be smoothly removed from the data center; on the other hand, steel string radiator can be used, and all pipelines are welded to prevent water leakage;

5) when planning and rectifying the data center, you can increase the height of the active floor, increase the slope of the air conditioning sewer pipe for the data center, and use live joints to facilitate removal and cleaning; if the tap water pressure is too high, apply a pressure relief valve (this is because of the requirements of the humidifier), and try to use a hard connection with the humidifier.

6) avoid setting up data centers on the top floor as much as possible, and do not create data centers in the basement in the south. When selecting a data center, you must consider the appropriate geographical environment to build the data center. In addition, the partition between the built data center and the Office should be closed, whether under the ceiling or under the movable floor.

6. It device defense

It office equipment is mainly used for laptops, desktops, and OA products, and these devices are mostly used in enterprises, houses, and other places. Compared with data centers, the equipment used to defend against lightning attacks is weak in private rooms and enterprise office areas. This often causes power supply and computer motherboard damage, resulting in high maintenance costs. There are many types of computer lightning strikes, such as lightning strikes from network cables and power adapters.

Defense Measures:

1) It is recommended that you do not need a computer during thunderstorms, or unplug the network cable, disconnect the power adapter, and disable the wireless network adapter;

2) do not use a modem or ADSL device to access the Internet during thunderstorms;

3) purchase product brands with accident protection risks (for example, Dell vostro series commercial notebooks with accident insurance)

Floods, earthquakes, and other disasters may attack data centers without warning at any time. With a reliable disaster recovery plan, information can be restored in a timely manner without any help. If there is no sound disaster recovery plan, enterprises may have to pray that the system will not fail. Even if the site selection of the data center is well planned, the disaster recovery problem of the data center cannot be ignored.

At present, many enterprises or institutional data centers cannot normally cope with many internal and external security challenges and threats to meet business continuity and availability requirements. It faults and various disasters often cause enterprises to stop providing services, this results in great losses.

To avoid disasters during disaster recovery plans, disaster recovery systems also need to work collaboratively. Therefore, collaboration between software and hardware is also the key to disaster recovery. In the IT environment, information sharing between disaster defense and recovery systems must be ensured, which is why system integration is so important.

In the event of a disaster, IT system business recovery is crucial. Gu yuyun: "People have no worries, and there must be close worries ". Since it disasters are inevitable, only a few more sets of disaster recovery policies can be formulated to deal with various possible disaster recovery strategies. When it disasters come, they can be calm and calm.