Just like in any IT department, computing also requires power. The servers, CPUs, storage and memory cannot perform without power. A server that does not have power cannot perform its stipulated functions. For a long time now, large-scare computer systems have been in existence thus many people are familiar with data centers and how they work and why they need them. In the late 1940s, the computers were very large and this required that special rooms be set aside for them. Today there are PCs that require IT infrastructure with lots of hardware and these are referred to as data centers or server rooms. Data centers are commonly run by government agencies or large companies. In addition, they are currently being used for the provision of fast-growing solutions to privately owned business.
Computers need electricity among other things such as protection from thieves and people who manipulate the hardware intentionally. The data center contains buildings that host servers and equipment’s that require power. The electricity required is in the forms of Amps, Volts, OHMS and watts. Amps are the current electrons that pass through the lines. Volts are referred to as the pressure in layman’s language that pushes the amps. A high number of volts are good as they make sure that electricity is used effectively. OHMS is the resistance that slows down the current. Watts are the actual power that is used by a device, for instance by a server.
The data center is usually connected to two grid sectors that are separate and are operated by a local utility company. This is to make sure that if one of the grids fails, the power will still continue being supplied by the second one. The data center also has diesel generators that are always housed in a separate building. The generators produce megawatts that are enough to supply electricity to the data center in case there is an emergency. The generators are always stored in a heated state to ensure that they can be started up immediately in case an accident occurs. An outage in just one of the grids can trigger the generators to start automatically. The data center also contains block batteries that act as a backup system that ensure that the applications can run for 20 minutes. This ensures that power is provided from the time a blackout occurs up to when the generator starts.
Another unique feature is the power supply system. This system ensures that a person can repair work on the Internet without necessarily having to turn off all the databases, electrical equipment or the servers. The storage units contain redundant units that supply power that transform the voltage supplied from the two grids into the operating voltage. Another important activity is cooling the data center. The heating occurs when the processors generate heat. For effective cooling the servers are fitted in racks that look like shelves. Two racks are laid out in such a way that they face each other. Cool air is then blown through the racks and it disperses the heat that is produced by the servers. A one person access system that is operated by use of power ensures that only authorized persons have access to the data center.
Here is a picture graph that may help draw this out a little better: