Allowable vs. Recommended ASHRAE Guidelines - Design Your Data Center

by Mike Rinaldi on 2/8/12 10:40 AM

One thing we are seeing more and more of today is confusion over what temperature and humidity parameters data centers should be designed for.  Most of the discussion seems to assume that there is a monolithic block of data centers that can all be designed the same way.  Nothing could be further from the truth. 

Most of the data centers in existence today have a mixture of technologies and systems that all have varying environmental requirements.  We typically refer to these as mixed use data centers.  Unlike an E-Bay, Google, Microsoft or Apple data center, there is not rack after rack of the same equipment, all with similar operating requirements.  That is a very small, but highly publicized part of the market.  Everyone loves to write about the latest designs from Yahoo, Google, Apple, Etc, but they are not representative of the larger data center market as a whole. 

psychometric chart

The majority of data centers have multiple generations of technology, some type of spinning disc, some type of tape storage and maybe even some mainframe systems.  These data centers can still be extremely energy efficient, but are not going to see the extremes of the ASHRAE design guidelines.  They are the data centers that should probably stay with the ASHRAE recommended guidelines.  Below is an example of the recommended versus allowable ASHRAE Guidelines.  Please note that the recommended temperature guidelines didn’t change in 2011, only the allowable.

•       Temperature

•       2004 – 20C to 25C - Recommended

•       2008 – 18C to 27C - Recommended

•       2011 – 5C to 40C - Allowable

•       Humidity

•       2004 – 40 to 55% - Recommended

•       2008 – 35 to 60% - Recommended

•       2011 – 20 to 80% - Recommended

I know these data centers don’t get the publicity of the designs that push the envelope, but they are much more representative of the data center market as a whole.  We certainly do our share of cutting edge designs, but the majority of our clients are looking for ways to add capacity and increase the efficiency of their “traditionally designed” data centers.  This may include air and water side economizers and/or more efficient UPS systems and distribution.   The designs vary significantly, but the one thing these data centers have in common is that they all have equipment requirements that would preclude some of the modern designs that have little to no temperature and humidity control.

Published on 30th January 2012 by Ron Hughes-Data Center Dynamics

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Topics: CUE, Emerson Network Power, data center infrastructure, Data Center, data center design, kW per rack, data center infrastructure management, PUE, robust data center, DVL, electrical distribution

Local Data Center Users' Forum Discusses Critical Topics

by Mike Rinaldi on 2/2/12 10:34 AM

Every 3 to 4 months, DVL hosts a small Data Center Users' Forum.  The mission of the DCUF is to provide a commercial free forum where members collaborate on relevant mission-critical issues, new technologies, customer testimonials, and best practices affecting reliability, availability, and lowest cost of operation.

Data center users' forum

Last Friday, the DCUF, which includes IT and facilities professionals from multiple industry types, discussed various topics including:  Data Center Infrastructure Management, metering and trending, bridging the gap between IT and Facilities, outsourcing vs. keeping everything in-house, industry power trends, passive RFID asset technology, containment, power outage/root cause analysis.

Data center users' forum

For more information about the Data Center Users' Forum/DVL:

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Topics: Emerson Network Power, data center infrastructure, Data Center, data center design, kW per rack, data center infrastructure management, DVL, electrical distribution

DC Power For Data Centers of the Future?

by Mike Rinaldi on 1/24/12 11:40 AM

An alternative approach to conventional alternating-current (AC) power uses a direct-current (DC) power distribution scheme throughout a data center. Most data center server racks are not currently powered this way, but with the advent of servers on the market that can operate with either AC or DC, it is possible to use the DC powering approach, thus eliminating extra power conversion steps and losses. Other benefits include reduced cooling needs, higher equipment densities, and reduced heat-related failures.

DC power

This web site describes two pioneering demonstrations - one where direct current is distributed at the facility level to racks of computers that have been modified to directly accept high voltage direct current (DC) and another where the DC power conversion occurs at the rack level and DC is then directly distributed to servers within the rack. In typical data centers, the loss in electrical power through conversions of alternating current (AC) to DC to AC to DC occurs for all power flowing to the IT equipment. Efficiency gains have a magnifying effect by reducing need for HVAC (e.g. 10% saving at the UPS level mean about 10% energy savings for the entire data center, compared to a very efficient AC baseline case and assuming the HVAC system consumes as much power as the IT equipment).  Source: Lawrence Berkeley National Laboratory .

>> Read more now 

A New Study Reinforces Case For DC Power Saving

It’s been five years since a study by Lawrence Berkeley National Labs outlined the potential for DC power distribution to cut data center energy use by 10 to 20 percent. But adoption of DC in data centers remains limited, even as the industry aggressively pursues a wide array of other energy savings strategies.

>> Read more now

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Topics: Emerson Network Power, data center infrastructure, Data Center, Green IT, data center design, kW per rack, data center infrastructure management, PUE, robust data center, DVL, electrical distribution, DC Power

Reorganization for DVL

by Mike Rinaldi on 1/17/12 2:07 PM

DVL greets 2012 with organizational changes and celebration for being named one of the Best Places to Work in PA.

BRISTOL, Pa.--(BUSINESS WIRE)--The new year will bring continued employee satisfaction and organizational changes for DVL Group, a provider of Emerson/Liebert data center infrastructure solutions in Pennsylvania, New Jersey, and Delaware.

“But one thing the company does not plan on changing is its recognition as one of the Best Places to Work in PA, an honor bestowed on DVL for the fifth year in a row by the Central Pennsylvania Business Journal.”

Joe Bedics will become Chief Operating Officer of DVL. In this role he will be responsible for the internal administrative functions, including human resources, IT, accounting and marketing.

Fred Franks will add the role of Treasurer to his current position as Chief Financial Officer of DVL. As Treasurer/CFO, he will be responsible for managing the financial risk of the company, including banking, insurance and bonding company relationships, cash management and investments and oversight of the Employee Stock Ownership Plan (ESOP).

>> Read more here

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 Efficient Solutions Center

For more information - goto www.dvlnet.com

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Topics: data center infrastructure, Data Center, data center design, data center infrastructure management, robust data center, DVL, Green Technology

EPA Releases New Energy Star Specifications For Data Center Products

by Mike Rinaldi on 1/10/12 12:39 PM

With industry forecasts predicting that server and data center energy consumption will nearly double from 2006 to 2011 nationally, the U.S. EPA is encouraging organizations to improve data center energy efficiency.  To help organizations meet this goal, the EPA has announced updates to the energy efficiency requirements for a variety of Energy Star qualified products and equipment for data centers.

EPA Data Center

"All Energy Star labeled data center products will come with an associated Power and Performance Datasheet (PPDS) that lists product information and detailed test results," said EPA. "Energy Star recognizes that data center products are highly complex systems that require more than just a label to understand their energy performance. All data center products will be tested according to their specific Energy Star test procedure, the results of which will be reported in a standardized format in the PPDS."

In the update, EPA announced new spec process for Uninterruptible Power Supplies (UPS), Data Center Storage, and Servers V2.0.  

>>Read the entire artilcle now  

>>Top 12 Ways To Decrease Energy Consumption of Your Data Center

Emerson's LEED Data Center | Discover the strategies and technologies Emerson employed to maximize efficiency, scalability and reliability in their state-of-the-art data center.

 

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Topics: CUE, Emerson Network Power, data center infrastructure, Data Center, Green IT, data center design, kW per rack, data center energy, data center infrastructure management, PUE, DVL, electrical distribution, Green Technology

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