Up Powering
Efficiency and ease of management in data center power and cooling solutions meet institutions’ ever-changing needs.
2% The percentage of all electricity used in North America that powers data centers*
by T o m m y P e t e r s o n photography by e r i k o s t l i n g
hen Salt Lake Community College (SLCC) opened the new $45 million Center for Arts and Media on its South City campus in November 2013, the college instantly charged to the forefront of digital media and film education in the Western U.S. It was up to Technology Director Casey Moore and his IT team to keep the new wealth of professional-grade multimedia equipment humming with the right power and cooling solution. The 130,000-square-foot Center for Arts and Media includes state-ofthe-art TV and film production studios, a soundstage, screening rooms, gaming
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labs, web design labs and more, alongside banks of computers dedicated for video and audio production and editing. The college built a new data center to support and back up the new multimedia equipment, along with hardware from the campus’s old data center. To ensure reliable and consistent availability of critical applications, the IT team installed a complete power and cooling solution from APC by Schneider Electric. “The old data center for the South City campus was about the size of a closet. Sometimes it was a very hot closet,” Moore says. “We wanted a power and cooling solution that we knew worked and that we could manage.” SLCC is not alone: Higher education
Casey Moore says new APC power and cooling components ensure the data center can meet expected growth in demand as SLCC’s Center for Arts and Media grows.
institutions increasingly look to power and cooling technologies to improve efficiency while maintaining reliability in the data centers, Forrester Research analyst Sophia Vargas says. Greater data center densities today only add to the increased focus on power and cooling, but saving money and gaining increased control over the computing environment are the main drivers. “Densities across average environments, like most of those in higher education, are increasing slowly,” Vargas says. “The incentive to reconfigure facility layouts and [power and cooling] equipment is driven more by efforts to optimize facility management and reduce cost by using energy more efficiently.” *SOURCE: “A Review of Data Center Cooling Technology, Operating Conditions and the Corresponding Waste Heat Recovery Opportunity” (Renewable and Sustainable Energy Reviews, March 2014)
An APC Symmetra Power Array PX 500 kVA uninterruptible power supply (UPS) provides a flexible range of power and offers a modular architecture for easy scaling of both power and runtime for the new data center at SLCC. Eight rack-mounted APC InRow Chilled Water coolers also offer built-in intelligence that automatically adjusts fan speeds and chilled-water flow to the heat load. A hot-aisle containment system and hotswappable power distribution units for individual racks complete the solution. Built-In Intelligence APC StruxureWare Data Center Expert software enables the IT staff to monitor and manage power consumption and temperature in the Center for Arts and Media data center (and all other APC installations on SLCC campuses) from a single web-based interface, System Administrator John Madsen says. The South City campus is one of 10 college sites in Salt Lake City and its suburbs. “You want the ability to see the entire power and cooling environment from anywhere,” Madsen says. “If I were giving advice about picking a system, I’d say to insist on that level of reporting and control.”
Minimizing power use was not the primary driver of his team’s decision to standardize on APC equipment, Moore says. But the overall efficiency of the system, which automatically matches power to the real-time load, is an added benefit. Moore and Madsen estimate the data center is operating at only about 25 to 30 percent of its capacity, and draws only about 20kVA, a fraction of the Symmetra Power Array’s capacity. “We built in a lot of room for growth and wanted a power and cooling system that could handle it,” Madsen says. “As the data center grows, we’ll probably want to manage the electricity and temperature more aggressively.” Need to Know Jamie Soule, IT operations manager at the University of Massachusetts, Boston, says visibility into critical systems such as power and cooling is imperative. Soule and his IT team plan to move the university’s main data center into a new space in 18 months and are evaluating solutions. Ease of monitoring and management are among their key criteria. UMass Boston today uses two APC by Schneider Electric 80kVA
Hot or Cold?
Today’s state-of-the-art power and cooling systems deploy cold-water coolers for individual server racks and control and separate the flow of hot and cold air in the room, usually through one of two basic strategies: Hot-aisle containment Equipment racks are positioned back to back, and the aisle between is enclosed and vented back to rack-mounted coolers and air-conditioning system intake. Temperatures in the data center stay cool. Cold-aisle containment Equipment is set up face to face across a covered aisle, sealed on both ends and connected directly to the air-conditioning output or to a vent in a raised floor that delivers cold air. Ambient temperature in the data center is warm. Salt Lake Community College Technology Director Casey Moore and his team recently deployed APC hot-aisle containment for a new data center on the college’s South City campus, after seeing success with similar deployments on other SLCC campuses.
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“Both [hot and cold containment] allow for an overall higher efficiency than without them, but hot-aisle containment does better by driving up the return temperature into the in-row coolers,” Moore says. “In an emergency, there would be a larger volume of [cool] air in the room to feed the equipment than a cold-aisle containment system allows.” The decision of whether to deploy one strategy over the other should be based on an organization’s specific needs, Forrester Research analyst Sophia Vargas advises. What matters most is finding an effective way to separate hot and cold air within the available data center space, she says. “It’s a basic best practice to not dilute the cooling environment with exhaust,” she says. “The next step up is to direct the two air flows to take better advantage of the cooling system.”
APC in-row coolers automatically adjust fan speeds and chilled-water flow to heat loads.
Symmetra UPSs for power backup and management of 90 physical servers. For cooling, the university uses seven of Emerson’s Liebert rack-chilled water coolers in the main data center, which is arranged in hot and cold aisles, but without containment structures. Soule is investigating containment systems for the new data center. Drexel University in Philadelphia relocated and upgraded its secondary data center last year, installing an APC by Schneider Electric system that includes a Symmetra 100kVA UPS and seven InRow coolers with N+1 redundancy, says Paul Keenan, executive director of systems and security. Keenan would like to upgrade the university’s primary data center to a power and cooling system similar to that in the secondary facility. APC software enables the IT staff to centrally manage the disparate pieces of power and cooling equipment, Keenan says. Although efficiency is important, the reason Keenan hopes to upgrade is even more basic: “Reliability in the form of that N+1 redundancy is what the power and cooling systems are all about.” SLCC’s Moore concurs: By far, his greatest justification for the college’s investment in the new system is simply that “it works.” Power and cooling is just one of several fundamental components of the new infrastructure that make the technology-rich arts and media center possible, Moore says. “Typically, power is not something we worry about, and that’s the way it should be,” he says. n
Go behind the scenes of Salt Lake Community College’s data center upgrades at edtechmag.com/ higher/SLCCvideo.
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