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Datacenter migration，Dust can be said to be the enemy of the machine room, if the dust of the machine room is not in place, good server and network equipment will have problems.Because of the server and network equipment in the process of operation will produce a lot of heat, to keep the heat out, usually adopt the way of active cooling exhaust heat, due to the room space is narrow, these devices are usually adopts air cooling heat dissipation in the form of convection of air ventilation and cooperate, inside the dust into the device.In addition, some devices produce high pressure and static electricity that attracts dust in the air.Dust will be entrained water and corrosive substances together into the device, covered in electronic components, cause the loss of electronic heat capacity, long-term accumulated a lot of heat equipment operation will lead to instability.

In addition, because of the dust containing water and corrosion material, the insulation resistance between the adjacent have printed line drop, short circuit, even affect the normal work of the circuit, seriously will burn off power supply, motherboard and other equipment parts.Excessive dry dust entering the equipment, can play an insulating role, directly lead to contact between the connector contact poor.Will increase the frictional resistance of equipment action at the same time, light person to speed up the equipment wear and tear, or damage to the device stuck directly cause, thus dust on server and network equipment damage is very big, so the server and network equipment regularly comprehensive dust removal is necessary.The dust removal of machine room server and network equipment should also be taken into account in the machine room and outside of the machine room.Many puzzling failures are dust "blame", the purpose of the server and network equipment maintenance and maintenance, is the inherent law in accordance with the equipment, according to the objective economic law at the same time, through the maintenance and other means, often make it maintain in good condition, improve the utilization rate, prolong the service life and seeking the most economical equipment life cycle cost, the pursuit of no accidents, high yield, ultimately win the enterprise benefit and social benefit.
The path of dust.
1. The air-conditioning system used to maintain the temperature and humidity of the whole machine room will inevitably bring some dust into the machine room.
2. The machine room manager will bring some dust into the machine room during the process of entering and leaving the machine room.
3. The dust of the building itself, the doors and Windows of the machine room (especially the ordinary room without dust treatment) can easily flow into a large amount of dust.And the aging of the machine room itself (such as wall, ground, ceiling, etc.) surface of the surface of the surface to fall off is also easy to form dust.
4. Dust produced by the machine room equipment itself, such as the paper cuttings and toner particles produced during operation.
5. Most machine rooms have negative pressure on the outside of the machine room at the time of operation, that is, the external air pressure is higher than the air pressure of the machine room, resulting in excessive dust cleanliness in the machine room.
How to prevent dust generation?
1. Computer room partition control.In the case of large machine room, regional management should be carried out, and the equipment that is susceptible to dust interference should be separated from the people entering the machine room to reduce the chance of contact with dust.For example, the machine room can be divided into three zones, the server host area, the control area and the data processing terminal area.Special visit channels are set up, and the channel is separated from the main area by the glass curtain wall.
2. Regularly check the sealing of machine room.Check the Windows and doors of the machine room regularly, clean the air conditioning filtration system, close the gap with the outside contact, eliminate the source of dust, and keep the air clean in the machine room.
3. Maintain the humidity of the machine room.Strictly control the air humidity in the machine room, that is, to reduce the dust, but also to avoid the air humidity over the equipment to produce rust and short circuit.
4. Strict control of personnel entry and exit.The access control system shall not be allowed to enter the machine room without permission to enter the machine room, and the activity area of the personnel entering the machine room shall be strictly controlled, so as to avoid entering the host area.
5. Pre-dust removal measures.The machine room should be equipped with special work clothes and slippers, and often clean.Personnel entering the machine room, whether the machine room personnel or other persons allowed into the machine room, must change the special slippers or use the shoe cover.Minimize the entry into the machine room by wearing fiber or other clothing that is prone to electrostatic adhesion.
6. Increase the pressure of the machine room.It is suggested that the machine room with the condition should adopt positive pressure and anti-dust, that is, to continuously input fresh and filtered air into the machine room through a device similar to the air bucket, and increase the pressure inside the machine room.Due to the pressure difference inside and outside the machine room, the air in the machine room is deflated through the cracks in the closed Windows and doors, thus achieving the anti-dust effect.
Dedusting equipment important parts.
1. Dust removal of the main board.
As the basic hardware of the whole equipment, the main board is the easiest to cause problems, and the main board is also the easiest to gather a large amount of dust.When cleaning the motherboard, first remove all the connectors, and the equipment should be numbered to avoid confusion.Then, remove the screws of the fixed motherboard, remove the main board, and brush the dust with the wool brush.In operation, the force must be moderate, in case of touching the surface of the main board of the chip element or causing the loose of the element, and welding.Excessive dust can be cleaned with anhydrous alcohol.Special protection should be made on the temperature measuring element (thermistor) on the mainboard, such as shielding it in advance with the occlusion and avoiding the protective failure of the main board caused by the damage of these components.Motherboard slot if too much dust can be used to clean out the tiger skin or hair dryer, if appear oxidation phenomenon, can be used with a certain hardness of paper and insert groove back and forth to wipe (smooth surface that facing).
2. Dust removal of connectors.
On the surface of the plug main board the same method can be used for cleaning, splicing of partial oxidation occurs, can use a rubber wipe off the gold finger, carefully inserted after the return to the mainboard, fill with hot melt adhesive on both sides of slot to avoid cracks, prevent dirt to enter and oxidation in the process of using.
3. Fan dust removal.
Fan blades are generally accumulated a large number of internal and external coating, we can withstand leaves one by one by hand with brush wiped the dust on the blade, then fan and fan frame inside with a wet cloth to wipe.You can also add some lubricating oil to the shaft to improve its performance and reduce noise.Concrete filling method is: open oil baffle can see fan axis, turn the blade and drip into the shaft by hand with a little oil to make it full penetration, refueling shoulds not be too much or you will absorb the dust more, finally put oil block.For the structure of the fan and the heat sink can be separated, can remove the heat sink with water thoroughly clean, less dust blowing balloons can use soft brush to add clear method, integral of the heat sink for, can use a crack in the hard brush to clean up dust, at the same time complementary with dust blower.After cleaning, the heat sink must be completely dried and reinstalled. When reinstalling the cooling plate, it is recommended to apply a proper amount of thermal conductive silicone grease to enhance the thermal conductivity.
4. Dust removal on the surface of the box.
For dust on the surface of the chassis, dry wet cloth can be used for wiping.Pay attention to wet cloth should be dry as far as possible, avoid residual water stains, wipe off should be blown dry by electric hair dryer.
5. External plug and socket dedusting.
For these external outlets, the general first USES the brush to remove the floating soil, and then the hair dryer to clean.If there is oil, the cotton wool can be used to remove the water alcohol.
Note:
Cleanser may also be used when cleaning, but the cleaner should be neutral, because the acid will corrode the equipment, and the detergent must be volatile.
6. Dust removal at power source.
The power supply is very easy to accumulate ash equipment, and is affected seriously by the temperature.Be sure to pay attention to the internal pressure when disassembling the power supply. If there is no professional knowledge, don't take it apart.If you do not disassemble, you can use a blower to blow out dust from the power inlet, and clean the fan blades with a hard brush through the fan filter.
Note:
Some devices do not allow users to disassemble themselves, otherwise the manufacturer will not guarantee the warranty, and the manufacturer will be contacted for confirmation before disassembly.All parts should be gently handled, especially hard disk, should not be touched;The upper screw should be tight and moderate, and the insulation film is needed on the position.After cleaning maintenance to the hardware into the chassis, cables and power supply is connected, in the case of not cover chassis system commissioning at first, have a look at the fan operation is normal, check whether there is a plug not firm or sound.Although the dust can not be completely eliminated in the machine room, but the environment of good machine room can greatly reduce the trouble of dust, so the daily dustproof is the most important.According to the design specification of the electronic computer room, under static conditions, the number of dust particles in each liter of air is greater than or equal to 0.5m, and should be less than 18000.Regular inspections should be conducted according to this standard.
Equipment dust removal precautions.
1. Dust the equipment should be in operations engineers with the customer, head of the presence of both side for dust removal operations engineer with the customer side of head should be the scene, the problems in the process of dust timely communicate to solve.
2. In the process of the dust removal equipment, such as equipment malfunction, should have contingency plans To internal dust removal equipment should be considered before some devices do not allow the users to take apart, otherwise will lose the warranty, please contact before dismantling equipment manufacturers to confirm;All parts should be gently handled, especially hard disk, should not be touched;The upper screw should be tight and moderate, and the insulation film is needed on the position.Dust removal after the maintenance to the hardware into chassis cables and power supply is connected, in the case of not cover chassis system commissioning at first take a look at the fan operation is normal, check whether there is a plug not firm or sound.If the equipment is damaged during the dust removal process, the standby equipment should be replaced to ensure the normal operation of the system.