IBM Systems Magazine, Mainframe - September/October 2010 - (Page 56)

Stop Run An eclectic take on the mainframe world Energy Guru 0)4ÃJVVSPUNÃL_WLY[Ã9VNLYÃ:JOTPK[ÃZH`ZÃ[OLÃWVZP[PVUPUNÃVMÃTHJOPULZÃTH[[LYZ BY NEIL TARDY point out customers can achieve meaningful energy savings by taking some simple steps. Schmidt, an internationally recog nized exper t in t he f ield of elec t ron ic cool i ng a nd t he holder of more than 100 patents/ patents pending in the area of electronic cooling and energy-saving solutions for data centers, meets with customers worldwide. If he’s entering a data center that’s at least 10 years old, he’ll look first at the placement of the machines. “A lot of clients don’t alternate the equipment in cold aisle/hot aisle,” Schmidt says. “That sounds like a simple arrangement, but a fair number of data centers still aren’t organized that way. That’s wasteful in energy and it can be hurtful to the IT equipment.” What Schmidt means by hot aisle/ cold aisle is this: A data center has multiple rows of IT equipment. These machines should be positioned around cooled air emanating through vents in the raised floor. That way, all machines face these “cold” aisles—and each other—with the cooling on the fronts of the boxes. “In other words, I can walk down the cold aisle, look right, look left and see the Roger fronts of the machines,” Schmidt Schmidt says. “I can walk down the hot aisle, look right and left, and see the backs of the machines blowing their hot exhaust air.” Modern data centers generally adhere to cold aisle/hot aisle. But in many ’90s-era data centers— which were built and populated when computing power and energy costs were a fraction of what they are now—machines may all face one way, or every which way. “If every row is arranged in the same direction, with exhaust air coming out the back of one row and W hen it comes to making data centers more energy-efficient, IBMer Roger Schmidt knows there are no easy answers. However, he’ll also then blowing onto the front of the next, the temperature will increase on each row,” Schmidt says. “It doesn’t work.” Not everyone who knows about cold aisle/hot aisle feels comfortable implementing it. Schmidt was recently in South Africa meeting with a large customer. “It was a mess, and they knew it,” he said. “But if it’s not set up that way, shutting everything down and re-cabling all the machines can be a major problem. It’s hard to switch over.” On the other hand, some customers fail to recognize that data centers should be cooled, as opposed to cold. “Even if people do have cold aisle/hot aisle set up, walking through that cold aisle can feel like a meat locker,” Schmidt says. “A higher temperate, up to 80.6 degrees on the cold aisle, is allowable and encouraged for clients to save energy.” PHOTO COURTESY OF ROGER SCHMIDT. Neil Tardy is a freelance writer forÃ0)4Ã:`Z[LTZÃ4HNHaPUL! 56 SEPTEMBER /OCTOBER 2010

Table of Contents for the Digital Edition of IBM Systems Magazine, Mainframe - September/October 2010

IBM Systems Magazine, Mainframe - September/October 2010
Editor's Desk:  Not So Secret Sauce
Dashboard:  Find an Extra Day
Think Smarter:  Competing Takes Equal Parts Growth and Restraint
Data Display:  Privacy:  Who Do You Trust?
Insider:  Untangling the Web of Processes and Technology
Trends:  System z as the Hub of a Workload-Optimized, Business Analytics Systems
Case Study: A Merger Made Easy" EmblemHealth Saves Money By Easing into an In-Sourced Computing Model
Expanding Beyond Borders:  IBM zEnterprise Systems Announcement Delivers a New Dimension in Computing.
Reducing Complexity:  The Next-Generation System z Server Is More Than Just a Fast, Scalable Solution
Focus on Storage:  IBM Tivoli Key Lifecycle Manager Solves Security Problems and Meets New Standards
Administrator:  z/OS Management Facility V1.12 Includes New Workload-Management and Resource-Monitoring Functionality
Developer: pureXML Extends Availability and Scalability to DB2 for z/OS
Advertisers' Index
Stop Run:  IBM Cooling Expert Roger Schmidt Says the Positioning of Machines Matters
2011 Mainframe Buyer's Guide

IBM Systems Magazine, Mainframe - September/October 2010