Electronics Protection - January/February 2013 - (Page 4)

Feature Five Powerful Virtualization Challenges Chris Loeffler, Data Center Applications Manager Eaton Corp. A North American Fortune 500 company was facing challenges that look familiar to many data center managers. Server sprawl had led to an inventory of more than 5,000 distributed servers, most of them under 20 percent utilized. If nothing changed, the data center would soon outstrip its power and cooling capacity. A new facility would be required at a projected cost of more than $10 million. Instead, the company turned to virtualization. Mission-critical applications were redeployed onto 150 virtual Linux servers, occupying 20 percent of the original footprint. That left enough raised-floor space to triple processing capacity in the next three years, while cutting support costs in half and trimming $15 million from total cost of ownership. If these results sound good, they ought to. Virtualization has the promise to maintain or increase computing power and data center performance while controlling costs and extending the value of existing data center facilities. Virtualization enables partitioning, whereby a single physical server runs multiple virtual machines, each with its own independent and secure application and operating system. Instead of provisioning a single, physical server with enough spare (often idle) capacity to support the peak load of a single application, you can now dynamically match available processor power across the data center to meet the variable demands of application workloads. The same work gets done, but there’s far less idle capacity. Consider a typical small company, running 240 applications, one application per server, and each server operating at about 10 to 15 percent CPU utilization. In a typical scenario, about 200 or more of these applications would be candidates for virtualization, at an average rate of four applications per server. Consolidation would trim the configuration down to 52 physical servers in a virtualized environment and 30 conventional servers each running a single application, for a total of 82 hardware boxes. The savings are dramatic, as shown in the table below. ROI of Virtulization Data Center Size Server Power Draw Total Power Required Cooling UPS/electrical loss Electrical Cost Yearly electrical costs Additional Costs (UPS) Additionla Cost (cooling) Total Yearly Expense Total Savings Per Year Power improvement Reduction in cooling Reduction in UPS loss servers, but each one will be more critical than ever. Applications can be dynamically moved around as needed, but the support infrastructure cannot do the same. Data center footprint will be smaller, but overall data center efficiency might still be suboptimal. Additionally, the power and cooling infrastructure, which may have been quite sufficient for pre-virtualization needs, could easily become inadequate when data center performance patterns are radically altered. The good news is that there are practical and affordable ways to address these challenges, and improve data center efficiency in the process. Here’s a look at five common power-related challenges in virtualized environments, and the readily available technologies to address them and keep equipment safe. 1. Each Server will Consume More Power than Before Before Virtualization 240 servers 240 @ 200 W 48 kW 13.6 tons 7.2 kW $.08 per kWhr $33,638.40 $5,045.76 $27,078.91 $65,763.07 After Virtualization 82 servers 20.04 kW 5.7 tons 3.0 kW 30 @ 200 W, 52 @ 270 W $.08 per kWhr $14,016.00 $2,102.40 $11,282.88 $27,401.28 $38,361.79 58 percent 7.9 tons 4.194 kW But, despite all of its advantages, virtualization does present information technology (IT) and facility managers with a few unique power system challenges and considerations for protecting critical IT equipment. For instance, overall data center power consumption will be lower, but each server will draw more power. There will be fewer 4 On an un-virtualized platform, the average server CPU (central processing unit) runs at only 10 to 15 percent of capacity. With virtualization, that figure jumps to about 70 to 80 percent. The higher the CPU utilization, the higher the power consumption per server. For example, a Dell PowerEdge R620 1U server with a single Intel Xeon E5-2660 processor, consumes an average of 80 W at 10 percent utilization, 166 W at 70 percent utilization, and 258 W at 100 percent. Is your power distribution system up to these realities, or was it designed for the old 1U server world of 60 W to 100 W per U? Can it distribute enough in-rack power for high-density servers? Does it provide the needed visibility into power at the server level? Traditional power strips are no longer enough. The Solution: Increase the density of enclosure-level power protection and disAn advantage of enclotribution. Enclosure-based power modules sure-based PDUs is the ability to securely view are available that can distribute up to 34 kW in only a few U of rack space. The new- the status of each circuit from anywhere on est generation of enclosure-based power the company intranet distribution units distributes power in an or the Internet, and reorganized manner to four to 45 receptacles ceive automated alerts of potential trouble. for a wide range of power densities. • Standard Density - for applications less than 5 kW, 15 A to 30 A single-phase, to support up to six 1U/2U servers or peripherals. • High Density - 5 kW to 10 kW, 20 A three-phase or 30 A single phase to 50 A three-phase for high-density applications, such as up to 25 1U/2U servers or two to three blade server chassis. • Ultra High Density - 10 kW and up, 60 A three-phase to 100 A three-phase for an enclosure that will be loaded with up to four blade server chassis and other power-hungry pieces of IT equipment. An advantage of modern enclosure-based PDUs, compared to traditional power strips, is the ability to securely view the status of each circuit from anywhere on the company intranet or the Internet, and receive automated alerts of potential trouble. As servers are pressed to carry multiple applications, availability at the server level becomes all the more important. January/February 2013 www.ElectronicsProtectionMagazine.com http://www.ElectronicsProtectionMagazine.com

Table of Contents for the Digital Edition of Electronics Protection - January/February 2013

Electronics Protection - January/February 2013
CPI’s eConnect PDUs Integrate Thermal Management with Intelligent Power Solutions
Five Powerful Virtualization Challenges
How Do You Choose Between Hot and Cold Aisle Containment?
Choosing the Right UPS Deployment Architecture for your Data Center
Adalet Offers Explosion Proof Enclosures Constructed from Stainless Steel
AVX’S MLC Capacitor Series Provides Protection Against ESD Strikes
Electrorack Launches Contain-IT Aisle Containment Solution
CoolitDC v.6.00 Boosts Modeling Accuracy and Ease-of-Use
Tru-Block Failure-Free Surge Protection Products Introduced
TE Connectivity’s 2Pro AC Devices Deliver Enhanced Protection in A Single Component
Gore Protective Vent Improves Reliability of Electronic Displays
USB Panel-Mount PCB Connectors Added to L-com Lineup
Industry News
Calendar of Events
Research & Development

Electronics Protection - January/February 2013

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