Brad Kenney: Greening an Existing Data Center

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Brad Kenney
VP of IT Infrastructure, Avnet Inc.

Seventy-six percent of executives surveyed at the MIT Sloan CIO Symposium in May 2008 said they didn't have a committed budget for a greening policy, even though 90 percent said that greening their data centers is crucial to meeting their companies' business objectives. This wasn't the case for Avnet Inc., $14 billion worldwide distributor of electronic components, computer products, and technology services. In fact, Avnet received Computerworld's Best Practices in Green IT Award for a three-year project to create a more energy-efficient data center.

Avnet's 13,000-square-foot data center houses 1,200 logical servers, more than 200 terabytes of disk storage, a central tape backup system and redundant UPSs, generators, and switch gear. For Brad Kenney, vice president of infrastructure at Avnet, the greening of the company's data center wasn't another IT project, but an on-going process that has saved the company thousands of dollars in unnecessary power consumption, under-utilized servers, and inefficient UPSs. He says, "Most of all it's saved us the millions of dollars it would cost to build out our data center to house more servers we didn't need."

Kenney began the process by looking at every piece of equipment on the data center floor. Two important factors included the age of the device and its energy efficiency. Because manufacturers have become more concerned about energy consumption, Kenney found it more cost-effective to replace older air conditioners and older UPSs with new devices that were at least 20 percent more energy-efficient. He even looked at replacing floor tiles, lighting, and making adjustments in air handling. He says that little things like these can save up to 30 percent in energy consumption.

Server virtualization enabled Kenney to liquidate about 300 severs. Twenty-four physical ESX hosts now represent 378 virtual servers, and 39 AIX servers have more than 200 servers on them. Other consolidated efforts include moving to a centralized tape backup system and a storage area network.

Kenney is also amazed by the improved energy consumption that has resulted from virtualization, as well as from the other system consolidations. He says, "We went down by 44 percent in kWs per server. We've freed up more than 5,000 square feet on the data center floor."