How Cloud Computing Is Changing Data Center Designs and Costs

Cloud computing, with its emphasis on massive scale and efficiency, is changing the entire cost and design structures of data centers.

By Bernard Golden
Fri, September 16, 2011

CIO — If you've read this blog for a while, it's no secret that I believe that one aspect of cloud computing is a dramatic drop in the cost of computing. While many discuss cloud computing's cost advantage in terms of better utilization via resource pooling and rapid elasticity, we believe that there is a more fundamental shift going on as data centers are redesigned to focus on scale, efficiency, and a shift to commodity components.

Put another way, the former cost advantage (utilization, etc.) relies on more efficient use of existing data center design patterns, while the latter relies on transforming the cost basis of data centers by creating new design patterns.

I wrote about this topic a few months ago in a post entitled "Are You Making Your Data Centers Cloud-Friendly?" In it I discussed trends evinced at the San Francisco DatacenterDynamics conferenece: energy efficiency, raised operating temperatures, and "chicken coop" data center building designs.

A couple of developments this past week reinforced the perspective that data centers are rapidly evolving to become mass scale computing environments. Over the past decade, data center design has been standardized as a collection of standard components plugged together. Each component has been designed to optimize its efficiency, with the expectation that, taken as a whole, optimum efficiency would be achieved. That view is shifting to one in which an entire data center is viewed as an integrated combination designed to run at the highest possible efficiency level, which requires custom-designing sub-components to ensure they contribute to the overall efficiency goal.

I identified aspects of this in the previous post. The "chicken coop" data center is designed as long rectangles with a long side facing the prevailing wind side, thereby allowing natural cooling. Facebook, in its open compute design, places air intakes and outputs on the second floor so that cool air can enter the building and drop on the machines, while hot air rises and is evacuated by large fans.

The two things that caught my eye this week related to server design and network equipment cost. The design item is about Facebook's custom server design and the implications for today's standardized blade or pizza box server economics. The network equipment item relates to Brocade's announcement that it will rent equipment for placement in cloud computing environments. Both of these align with the continuing shift of data centers to low-cost, high-scale environments, and both call into question the viability of established data center designs and economics.

Facebook's Custom-Designed Servers

The first article is a Bloomberg piece titled "Dell Loses Orders as Facebook Do-It-Yourself Servers Gain." Bloomberg notes that large cloud providers are designing their own servers and having them manufactured to order. The traditional server suppliers like HP and Dell (while the headline read "Dell," it was clear from the article that this phenomenon applies to all of the major server vendors) are faced with an unpleasant dilemma: manufacture these custom designs, but accept lower margins, or proffer higher-margin standard designs and lose orders.

The implication of the article was clear. The large cloud market is cost-focused and applies pressure on vendors to accept less profit in return for volume. Astonishingly, according to Gartner analyst Jeffrey Hewitt, quoted in the article, this type of server accounts for 20 percent of the server market (the article wasn't clear if this is 20 percent of shipments or revenue). From this stat, it's clear that this is a significant part of the market; one can expect that it will come to represent an even higher proportion of the overall market, increasing the margin compression for server vendors.

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