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Trends shaping data centre design

The global recession has changed more than just business practice

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In the past, companies built data centres like parents buy clothes for their children: Buy big and wait for the kids to grow into them. However, companies that designed spacious data centres ended up wasting a lot of money, powering unnecessary infrastructure.

Today's data centre design decisions all pivot around maximising efficiency, while giving companies a path for future growth, says Steve Sams, VP of global site and facilities services for IBM. "We see our customers make very different design decisions than they used to," Sams says. "And the end result is that they are saving 30 percent in operational costs over the lifetime of the data centre."

About four years ago, IBM did an extensive study of contemporary data centre designs and found that the three questions that drove design decisions, how reliable, how big and how to satisfy those requirements at the lowest cost, were not enough. IBM, which is building out 200 to 300 data centres every year, observed five other key trends driving design decisions today.

1. Energy costs outweigh capital costs

IBM's study of its customers' data centres revealed that the costs to run a data centre quickly outstrip the original outlay for designing and creating the facility. Assuming a conservatively low 10 percent increase in energy costs, IBM estimates that the average data centre will cost five times more to run over 20 years than it cost to build.

The lesson: Build only what you need to now, so you can save money on capital costs. "The most energy efficient data centres in the world are the ones that are operating at 100-percent capacity," IBM's Sams says.

About 60 percent of data centre costs are actual physical components. Buying only what you needs saves the cost of the unnecessary components, but also multiplies that savings by eliminating the energy usage of unnecessary components.

Following its study, IBM has seen energy costs rise more than it had originally estimated. One financial customer in South Africa saw its energy costs rise 28 percent last year and 33 percent so far this year, Sams says.

2. Modularity matters

The key to data centres that are neither too big nor too small, but just right, is taking a modular approach. As its needs have grown, file transfer service YouSendIt has created a modular data centre infrastructure that grows with demand for the company's services. "It's an ongoing evolution," says Gary Chevsky, VP of operations for YouSendIt. "We are constantly striving for that modularity and flexibility."

The company, which allows people to transfer large data files to others, has invested heavily in building out a storage architecture that can adapt quickly to its growing customer base and their demands and provide services efficiently. "We constantly look at costs," Chevsky says.

IBM has seen this trend writ large. About 60 to 70 percent of the data centres it currently builds are modular in design, says IBM's Sams.


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