Google was never to show its inner workings. We have little access to the guts of the technology that runs in Mountain View. We can take a peek (like say the Bial) in scientific articles published by Googlers. Several of these articles give samples of primordial technology to Google. BigTable, MapReduce and PageRank (of course), are some of them.
However, when it comes to their huge data centers, Google does not usually give many samples. Until then. Well recently, the company opened the doors and showed how you can store, use and maintain hundreds of thousands of computers efficient.
At a conference on energy efficiency in data centers, Google revealed details of the operation and practices used to achieve better energy use and cooling their machines. Unlike other large companies, Google designs and builds its own servers.
The surprise of the experts was to discover that each server has a 12 volt battery unattended. If there is a problem with the power supply are those batteries that make the machines continue working.
The approach of batteries for each individual server has a good and big reason: cost reduction. Use a battery with the server is cheaper and costs grow because of the number of servers. Traditional data centers, use large batteries (called uninterruptible power supplies – UPS) to ensure uninterrupted power supply before a possible power generator into operation. Thus, when we need to increase the capacity of batteries, buying up other gigantic machine: lots of money and waste of money. Additionally, UPS reach 92% to 95% efficiency, in contrast with 99% efficiency in Google approach. According to the company, the expectations of the Environmental Protection Agency for the year 2011 in terms of efficiency have been achieved in Google.
“This is much cheaper than large centralized UPS,” said Ben Jai, designer of the Google servers. “There are no lost capacity”
Google also revealed that its data centers are built in large containers (yes, just like those we see in ports). Each can house 1,160 servers and total consumption can reach 250 kilowatts. I did not want to pay that bill.
Each server has 8.8 inches wide, with 2 processors (AMD and Intel x86), 2 hard drives and 8 memory slots, all in a motherboard manufactured by Gigabyte.
The company has a strong focus on energy efficiency and want to help other companies reduce costs. Besides helping the environment by wasting less electricity. Between the interests of Google, are still: cooling (cooling), power distribution and care for hot and cold air from mixing.
Another sample of perseverance with Google efficiencies is the design of the power supplies of energy (or just Power Supplies). They convert electricity to conventional AC (alternating current) to DC (direct current). The DC power sources usually provide either 5 as 12 volts. Already on Google’s servers, there are only 12 volts with the conversion being done inside the motherboard. Increasing the price a few dollars on the motherboard, but lowering the price of the Power Supplies and making more efficient sources for always being closer to the peak capacity.
Google has faced great challenges in these 10 years to ensure the scalability of their services. Keep the search box online 24 hours a day as efficiently as possible proved to be an obsession and bore fruit. The company has data centers efficient and friendly nature.