Original URL: http://www.theregister.co.uk/2007/01/25/looking_forward_power_cooling_data_centre/

Looking Forward: Power, Cooling, and the Data Centre

Where energy efficiency meets cost efficiency

By Clay Ryder

Posted in Servers, 25th January 2007 10:18 GMT

In the future, we may look back on 2006 as the year that power consumption, cooling, and energy efficiency in the data centre ceased being a back-burner issue for IT and facilities managers and elevated itself to become one of the forefront, if not leading, issues for many.

While those “in the know” have always been aware of HVAC and power distribution limitations, until recently it has not been a noticeable issue. During the past several months, we have seen vendors focus on the issue of energy efficiency through various initiatives including HP’s Smart Cooling , EMC’s Energy Efficiency Tool, Sun’s Cool Threads, the latest Energy Star Specification, and VMware’s energy utility rebates. With the competitive attention now being brought to bear, we expect to see this topic remain at an elevated level during 2007 as vendors line up their competitive differentiation and definitions of what exactly energy efficiency is all about.

Although much of the cost cutting and resource gutting by CIOs and CFOs during the first part of the twenty-first century focused on infrastructure consolidation and headcount reductions, it didn’t take too long for the impact of $75/bbl oil and 22¢/kwh electricity to reach into the data centre. At the same time, rather ironically, all the focus on server and storage consolidation combined with ever denser form factors such as blades has changed the heat generation and dissipation characteristics of the data centre. Thus, the limitation of physical reality has once again impeded progress in our collective journey to a virtual IT existence. Yet there are many similarities and lessons to be drawn from the “consolidate, simplify, and virtualize” mantra of the past few years. Just as inefficiencies in server and storage utilization have led to consolidations featuring closely monitored virtualization schemes, we are now witnessing the same opportunity with cooling and power consumption.

Over-provisioning of cooling and power is inherently just as inefficient as over-provisioning anything else. If machine rooms are continuously cooled to meet peak loads, then a lot of kilowatt-hours are going to waste. Likewise, if the actual power being drawn by equipment is less than the wiring supports and designed to a worst-case scenario that is unlikely to be achieved, there will be unnecessary breaker panels and conduit being installed. From a financial and operational perspective, targeting the cooling where it is needed, only when it is needed, just makes sense; anything emitted beyond this is simply waste that impacts the bottom line of the business. Similarly, electrical circuits that are underutilized represent an underperforming investment.

Although initiatives in the marketplace vary in their impact, we believe that the players who can provide dynamic realtime monitoring and control of the power consumption and cooling envelopes will be the long-term winners in this space. At present HP probably has the most comprehensive offering; however, other vendors certainly have many requisite pieces of the puzzle and one cannot overlook the expertise of IBM’s Global Services to pull together just about any solution given enough money. At a minimum, a combination of systems management, facilities management, myriad sensors, and realtime data acquisition and control software will be required to achieve enhanced data centre power and cooling efficiency. In addition, the knowledge, planning, and wherewithal to pull this together cannot be underestimated. But despite the higher barrier to entry to play effectively in this space, we believe the opportunity is too great for most systems or management vendors to overlook.

For systems management vendors such as HP, IBM, BMC, CA and others, the myriad sensors necessary to monitor environmental conditions represent an opportunity to extend management solutions to reach beyond the traditional bounds of IT. The dividing line between IT and facilities is clearly blurring in the data centre. This disruption in thinking highlights the latent opportunity. We expect to see more initiatives where vendors such as Sun, VMware, EMC, IBM, et al will work with utilities to implement creative programs to help organizations reduce data centre power consumption. Besides reducing the power bill, the reduced demand for data centre power forestalls the need for additional generation capacity on the power grid and is a win-win scenario for the utility and ratepayers alike. In addition, environmental factors such as air quality and ambient noise levels will likely emerge as drivers as well, as organizations rationalize and change how they approach office/work space internally.

Organizations will reap these benefits incrementally as they refresh their technology over its lifecycle, and in some cases, the savings might encourage earlier refresh of equipment that may still be functional, but less efficient. Of course, a significant upgrade of the data centre as a whole would bring more ROI sooner. If power utilities were to embrace power savings programs for computer technologies, like many do with older household appliances, lighting, heating, and cooling equipment, the potential to enhance the energy efficiency of the data centre would grow significantly. Hopefully, in 2007 this is exactly the kind of market place behavior we will see as chipmakers, drive manufacturers, systems vendors, storage specialists, systems management companies, and utilities all work towards improving the efficiency of the physical operation of the data centre.

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