technologi komputer

Kamis, 07 Juli 2011

Power Management in Data Centres

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Your data centre has specific power requirements. This means that the equipment contained in the centre consumes a specific amount of power. In order to properly manage the power requirements of your data centre you need to keep a number of factors in mind. Power management in data centres means ensuring the complete reliability of the electrical system supplying its power needs.

Power Isolation
Isolation transformers protect the equipment in your data centre from "dirty" power supplies. This means that any noise that is inherent to the base electrical supply network can be eliminated by using an isolation transformer. Technically, any transformer isolates the device it is attached to from the power supply, but isolation transformers are specially designed for their purpose. This type of transformer has a special type of shielding between the primary and secondary windings and is able to withstand higher voltages between windings.
Protection Against Voltage Transients
Power spikes are one of the main threats to sensitive electronic equipment. This means that as a data centre manager, or someone designing the electrical system for one, one of your most important jobs is to make sure that the electrical system is fully protected against transients. This means proper earthing to a centralized location. It also means ensuring that all of the most voltage sensitive equipment is attached to surge protection devices of one type or another. One of the most popular forms of voltage protection is the uninterruptible power supply, which uses an isolation transformer and a surge protector to protect the equipment, plus a battery or battery network, to ensure that, in the case of a power failure, the power to the data centre is kept up. Smaller UPS's use a small battery similar to a motorcycle battery, while larger units can require a bank of batteries housed in a dedicated room. What size UPS you choose will depend on the power consumption of the equipment that will be connected to it.
Maintaining 100% Uptime
Uninterruptible power supplies are great for those occasions when the power grid is out for a limited amount of time, such as a few hours. However, for times when the power is out for longer than what the UPS was designed to handle, you will need another option, especially if your data centre is mission critical. This means you will need a secondary source of power generation. This usually takes the form of a diesel-powered generator. Just like the UPS, these generators come in varying sizes, from rather small to extremely large. However, with the emphasis on green technologies, solar power is a viable alternative for use during the day in order to cut down on emissions. Additionally, the power generated by the solar cells can be used to cut down on the cost of power consumed by the building in which your equipment room is located. This also makes the use of solar power more cost-effective than power generation using fossil fuels.
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