technologi komputer

Jumat, 01 Juli 2011

Heat Management in Data Centres

Computers hate heat. This means that heat management should be one of your primary concerns if you manage a data centre. Heat management can be accomplished in a variety of ways. The most obvious is through air conditioning. The use of raised floors is another way to keep heat inside the server racks at manageable levels. Controlling access is one form of heat management that many people overlook.

Air Conditioning Is Your Responsibility Also
As the manager of a data centre, you need to know how much heat will be generated in your data centre. If you know this, then you can better work together with the facilities team to determine how big of an air conditioning system you will need. If your server room is relatively small, you may be able to use a heat pump, instead of an expensive air conditioning system. As the data centre manager, you and your team will be the ones that are doing most of their work in the data centre. This means that you will be the ones that see when something is blocking a return or supply vent. Also, this means that you will be the person that can tell if a vent needs to be repositioned to more effectively cool a server rack. The facilities department is responsible for keeping the air conditioning system is optimal running condition, but it's up to you to let them know when it isn't performing as it should.
Raised Floors Allow for Better Airflow Through Racks
It's common knowledge that a heat generating device will be cooled better when cool air is flowing across it than if it just placed in a room with cool air in it. This is one of the main reasons that most large data centres use raised floors. There are a number of people who think raised floors were created to aid in cable management and upkeep. While it's true that being able to pull a couple floor tiles to get to your cables makes this job much easier, raised floors also direct air up or down through server racks, providing for much more effective and efficient cooling of those racks and the components mounted in them. This airflow allows the cooling fans in the servers and other equipment to pull cooled air into the equipment, rather than air that's been warmed by the equipment before it has a chance to be cooled. This allows that equipment to run much cooler and more efficiently.
Control Data Centre Access to Manage Heat
This doesn't mean you have to be like Cerberus guarding the gates of Hades. It means that in order to most optimally manage data centre heat, the door should be kept closed as much as possible. This means that unless someone is actually going through the door, that door should be closed. Doors should NEVER ( repeat: NEVER) propped open, unless the data centre is not in operation or the air conditioning is offline and it is cooler outside than it is inside. In this case fans should be used to pull cooler air into the server room.
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