Updated 1/25/15

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The Green and Virtual Data CenterIntel recommended reading

Click here to learn about "The Green and Virtual Data Center" book (CRC Press) for enabling efficient, productive IT data centers. This book covers cloud, virtualization, servers, storage, networks, software, facilities and associated management topics, technologies and techniques including metrics that matter. This book by industry veteran IT advisor and author Greg Schulz is the definitive guide for enabling economic efficiency and productive next generation data center strategies.

Publisher: CRC Press - Taylor & Francis Group
By Greg P. Schulz of StorageIO www.storageio.com
 ISBN-10: 1439851739 and ISBN-13: 978-1439851739
 Hardcover * 370 pages * Over 100 illustrations figures and tables

Read more here and order your copy here. Also check out Cloud and Virtual Data Storage Networking (CRC Press) a new book by Greg Schulz.

Green hype and green washing may be on the endangered species list and going away, however, green IT for servers, storage, networks, facilities as well as related software and management techniques that address energy efficiency including power and cooling along with e-waste, environmental health and safety related issues are topics that wont be going away anytime soon. There is a growing green gap between green hype messaging or green washing and IT pain point issues including limits on availability or rising costs of power, cooling, floor-space as well as e-waste and environmental health and safety (PCFE). To close the gap will involve addressing green messaging and rhetoric closer to where IT organizations pain points are and where budget dollars exists that can address PCFE and other green related issues as a by-product.

The green gap will also be narrowed as awareness of broader green related topics coincide with IT data center pain points, in other words, alignment of messaging with IT issues that have or will have budget dollars allocated towards them to sustain business and economic growth via IT resource usage efficiency. Read more here.

White papers and Industry Analyst Reports and Perspectives

Articles, Tips, Blogs, Webcasts and Podcasts

StorageIO Blog

AP - SNIA Green Emerald Program and measurements
AP - Southern California heat wave strains electrical system
Ars Technica - EPA: Power usage in data centers could double by 2011
Ars Technica - Meet the climate savers: Major tech firms launch war on energy-inefficient PCs
Askageek.com - Buying an environmental friendly laptop
Baseline - Examining Energy Consumption in the Data Center
Baseline - Burts Bees: What IT Means When You Go Green
Bizcovering - Green architecture for the masses
Broadstuff - Are Green 2.0 and Enterprise 2.0 Incompatible?
Business Week - CEO Guide to Technology
Business Week - Computers' elusive eco factor
Business Week - Clean Energy - Its Getting Affordable
Byte & Switch - Keeping it Green This Summer - Don't be "Green washed"
Byte & Switch - IBM Sees Green in Energy Certificates
Byte & Switch - Users Search for power solutions
Byte & Switch - DoE issues Green Storage Warning
CBR - The Green Light for Green IT
CBR - Big boxes make greener data centers
CFO - Power Scourge
Channel Insider - A 12 Step Program to Dispose of IT Equipment
China.org.cn - China publishes Energy paper
CIO - Green Storage Means Money Saved on Power
CIO - Data center designers share secrets for going green
CIO - Best Place to Build a Data Center in North America
CIO Insight - Clever Marketing or the Real Thing?
Cleantechnica - Cooling Data Centers Could Prevent Massive Electrical Waste - June 2008
Climatebiz - Carbon Calculators Yield Spectrum of Results: Study
CNET News - Linux coders tackle power efficiency
CNET News - Research: Old data centers can be nearly as 'green' as new ones
CNET News - Congress, Greenpeace move on e-wast
CNN Money - A Green Collar Recession
CNN Money - IBM creates alliance with industry leaders supporting new data center standards
Communication News - Utility bills key to greener IT
Computerweekly - Business case for green storage
Computerweekly - Optimising data centre operations
Computerweekly - Green still good for IT, if it saves money
Computerweekly - Meeting the Demands for storage
Computerworld - Wells Fargo Free Data Center Cooling System
Computerworld - Seven ways to get green and save money
Computerworld - Build your data center here: The most energy-efficient locations
Computerworld - EPA: U.S. needs more power plants to support data centers
Computerworld - GreenIT: A marketing ploy or new technology?
Computerworld - Gartner Criticizes Green Grid
Computerworld - IT Skills no longer sufficient for data center execs.
Computerworld - Meet MAID 2.0 and Intelligent Power Management
Computerworld - Feds to offer energy ratings on servers and storage
Computerworld - Greenpeace still hunting for truly green electronics
Computerworld - How to benchmark data center energy costs
ComputerworldUK - Datacenters at risk from poor governance
ComputerworldUK - Top IT Leaders Back Green Survey
ComputerworldMH - Lean and Green
CTR - Strategies for enhancing energy efficiency
CTR - Economies of Scale - Green Data Warehouse Appliances
Datacenterknowledge - Microsoft to build Illinois datacenter
Data Center Strategies - Storage The Next Hot Topic
Earthtimes - Fujitsu installs hydrogen fuel cell power
eChannelline - IBM Goes Green(er)
Ecoearth.info - California Moves To Speed Solar, Wind Power Grid Connections
Ecogeek - Solar power company figures they can power 90% of America
Economist - Cool IT
Electronic Design - How many watts in that Gigabyte
eMazzanti - Desktop virtualization movement creeping into customer sites
ens-Newswire - Western Governors Ask Obama for National Green Energy Plan
Environmental Leader - Best Place to Build an Energy Efficient Data Center
Environmental Leader - New Guide Helps Advertisers Avoid Greenwash Complaints
Enterprise Storage Forum - Power Struggles Take Center Stage at SNW
Enterprise Storage Forum - Pace Yourself for Storage Power & Cooling Needs
Enterprise Storage Forum - Storage Power and Cooling Issues Heat Up
Enterprise Storage Forum - Score Savings With A Storage Power Play
Enterprise Storage Forum - I/O, I/O, Its off to Virtual Work I Go
Enterprise Storage Forum - Not Just a Flash in the Pan
Enterprise Storage Forum - Closing the Green Gap
EPA Report to Congress and Public Law 109-431
eWeek - Saving Green by being Green
eWeek - 'No Cooling Necessary' Data Centers Coming?
eWeek - How the 'Down' Macroeconomy Will Impact the Data Storage Sector
ExpressComputer - In defense of Green IT
ExpressComputer - What data center crisis
Forbes - How to Build a Quick Charging Battery
GCN - Sun launches eco data center
GreenerComputing - New Code of Conduct to Establish Best Practices in Green Data Centers
GreenerComputing - Silicon valley's green detente
GreenerComputing - Majority of companies plan to green their data centers
GreenerComputing - Citigroup to spend $232M on Green Data Center
GreenerComputing - Chicago and Quincy, WA Top Green Data Center Locations
GreenerComputing - Using airside economizers to chill data center cooling bills
GreenerComputing - Making the most of asset disposal
GreenerComputing - Greenpeace vendor rankings
GreenerComputing - Four Steps to Improving Data Center Efficiency without Capital Expenditures
GreenerComputing - Enabling a Green and Virtual Data Center
Green-PC - Strategic Steps Down the Green Path
Greeniewatch - BBC news chiefs attack plans for climate change campaign
Greeniewatch - Warmest year predictions and data that has not yet been measured
GoverenmentExecutive - Public Private Sectors Differ on "Green" Efforts
HPC Wire - How hot is your code
Industry Standard - Why green data centers mean partner opportunities
InformationWeek - It could be 15 years before we know what is really green
InformationWeek - Beyond Server Consolidaiton
InformationWeek - Green IT Beyond Virtualization: The Case For Consolidation
InfoWorld - Sun celebrates green datacenter innovations
InfoWorld - Tech's own datacenters are their green showrooms
InfoWorld - 2007: The Year in Green
InfoWorld - Green Grid Announces Tech Forum in Feb 2008
InfoWorld - SPEC seeds future green-server benchmarks
InfoWorld - Climate Savers green catalog proves un-ripe
InfoWorld - Forester: Eco-minded activity up among IT pros
InfoWorld - Green ventures in Silicon Valley, Mass reaped most VC cash in '07
InfoWorld - Congress misses chance to see green-energy growth
InfoWorld - Unisys pushes green envelope with datacenter expansion
InfoWorld - No easy green strategy for storage
Internet News - Storage Technologies for a Slowing Economy
Internet News - Economy will Force IT to Transform
ITManagement - Green Computing, Green Revenue
itnews - Data centre chiefs dismiss green hype
itnews - Australian Green IT regulations could arrive this year
IT Pro - SNIA Green storage metrics released
ITtoolbox - MAID discussion
Linux Power - Saving power with Linux on Intel platforms
MSNBC - Microsoft to build data center in Ireland
National Post - Green technology at the L.A. Auto Show
Network World - Turning the datacenter green
Network World - Color Interop Green
Network World - Green not helpful word for setting environmental policies
NewScientistEnvironment - Computer servers as bad for climate as SUVs
Newser - Texas commission approves nation's largest wind power project
New Yorker - Big Foot: In measuring carbon emissions, it’s easy to confuse morality and science
NY Times - What the Green Bubble Will Leave Behind
PRNewswire - Al Gore and Cisco CEO John Chambers to debate climate change
Processor - More than just monitoring
Processor - The new data center: What's hot in Data Center physical infrastructure:
Processor - Liquid Cooling in the Data Center
Processor - Curbing IT Power Usage
Processor - Services To The Rescue - Services Available For Today’s Data Centers
Processor - Green Initiatives: Hire A Consultant?
Processor - Energy-Saving Initiatives
Processor - The EPA's Low Carbon Campaig
Processor - Data Center Power Planning
SAN Jose Mercury - Making Data Centers Green
SDA-Asia - Green IT still a priority despite Credit Crunch
SearchCIO - EPA report gives data centers little guidance
SearchCIO - Green IT Strategies Could Lead to hefty ROIs
SearchCIO - Green IT In the Data Center: Plenty of Talk, not much Walk
SearchCIO - Green IT Overpitched by Vendors, CIOs beware
SearchDataCenter - Study ranks cheapest places to build a data center
SearchDataCenter - Green technology still ranks low for data center planners
SearchDataCenter - Green Data Center: Energy Effiecnty Computing in the 21st Century
SearchDataCenter - Green Data Center Advice: Is LEED Feasible
SearchDataCenter - Green Data Centers Tackle LEED Certification
SearchDataCenter - PG&E invests in data center effieicny
SearchDataCenter - A solar powered datacenter
SearchSMBStorage - Improve your storage energy efficiency
SearchSMBStorage - SMB capacity planning: Focusing on energy conservation
SearchSMBStorage - Data footprint reduction for SMBs
SearchSMBStorage - MAID & other energy-saving storage technologies for SMBs
SearchStorage - How to increase your storage energy efficiency
SearchStorage - Is storage now top energy hog in the data center
SearchStorage - Storage eZine: Turning Storage Green
SearchStorage - The Green Storage Gap
SearchStorageChannel - Green Data Storage Projects
Silicon.com - The greening of IT: Cooling costs
SNIA - SNIA Green Storage Overview
SNIA - Green Storage
SNW - Beyond Green-wash
SNW Spring 2008 Beyond Green-wash
State.org - Why Texas Has Its Own Power Grid
StorageDecisions - Different Shades of Green
Storage Magazine - Storage still lacks energy metrics
StorageIOblog - Posts pertaining to Green, power, cooling, floor-space, EHS (PCFE)
Storage Search - Various postings, news and topics pertaining to Green IT
Technology Times - Revealed: the environmental impact of Google searches
TechTarget - Data center power efficiency
TechTarget - Tip for determining power consumption
Techworld - Inside a green data center
Techworld - Box reduction - Low hanging green datacenter fruit
Techworld - Datacentere used to heat swimming pool
Theinquirer - Spansion and Virident flash server farms
Theinquirer - Storage firms worry about energy efficiency How green is the valley
TheRegister - Data Centre Efficiency, the good, the bad and the way to hot
TheRegister - Server makers snub whalesong for serious windmill abuse
TheRegister - Green data center threat level: Not Green
The Standard - Growing cynicism around going Green
ThoughtPut - Energy Central
Thoughtput - Power, Cooling, Green Storage and related industry trends
Wallstreet Journal - Utilities Amp Up Push To Slash Energy Use
Wallstreet Journal - The IT in Green Investing
Wallstreet Journal - Tech's Energy Consumption on the Rise
Washingtonpost - Texas approves major new wind power project
WhatPC - Green IT: It doesnt have to cost the earth
WHIRnews - SingTel building green data center
Wind-watch.org - Loss of wind causes Texas power grid emergency
WyomingNews - Overcoming Greens Stereotype
Yahoo - Washington Senate Unviel Green Job Plan
ZDnet - Will supercomputer speeds hit a plateau?
Are data centers causing climate change

News and Press Releases

Websites and Tools

Various power, cooling, emmisions and device configuration tools and calculators
SNIA Emerald program
Carbon Disclosure Project
The Chicago Climate Exchange
Climate Savers
Data Center Decisions
Electronic Industries Alliance (EIA)
EMC - Digital Life Calculator
Energy Star
Energy Star Data Center Initiatives
Greenpeace - Technology ranking website also here
LBNL High Tech Data centers
RoHS & WEE News
Storage Performance Council (SPC)
SNIA Green Technical Working Group
Transaction Processing Council (TPC)
The Green Grid
The Raised Floor
Terra Pass Carbon Offset Credits - Website with CO2 calculators
Energy Information Administration - EIA (US and International Electrical Information)
U.S. Department of Energy and related information
U.S. DOE Energy Efficient Industrial Programs
U.S. EPA server and storage energy topics
Zerofootprint - Various "Green" and environmental related links and calculators

Vendor Centric and Marketing Website Links

Brocade - Green website
Cisco - Green and Environmental websites here, here and here
Dell - Green website
EMC - EMC Energy, Power and Cooling Related Website
HDS - How to be green - HDS Positioning White Paper
HP - HP Green Website
IBM - Green Data Center - IBM Positioning White Paper
IBM - Green Data Center for Education - IBM Positioning White Paper
Intel - What is an Efficient Data Center and how do I measure it?
LSI - Green site and white paper
NetApp - Press Release and related information
Sun - Various articles and links
Symantec - Global 2000 Struggle to Adopt "Green" Data Centers - Announcement of Survey results

Vendors and organizations have different types of calculators some with focus on power, cooling, floor space, carbon offsets or emissions, ROI, TCO and other IT data center infrastructure resource management. Following is an evolving list and by no means definitive even for a particular vendors as different manufactures may have multiple different calculators for different product lines or areas of focus.




Australian Conservation Foundation




Carbon Credit Calculator UK

Carbon Footprint Site

Carbon Planet




CO2 Stats Site



DirectGov UK Acton

Diesel Service & Supply Power Calculator & Converter

Eaton Powerware



EMC Power Calculator

EMC Web Power Calculator

EMC Digital Life Calculator

EPA Power Profiler

EPA Related Tools


Google UK Green Footprint

Green Grid Calculator

HP and more here

HVAC Calculator



Kohler Power (Business and Residential)


MSN Carbon Footprint Calculator

National Wildlife Foundation






Sterling Planet

Sun and more here and here and here



TerraPass Carbon Offset Credits

Thomas Kreen AG

Toronto Hydro Calculator

80 Plus Calculator


42u Green Grid PUE DCiE calculator

42u energy calculator

What's your power, cooling, floor space, energy, environmental or green story? Do you have questions or want to learn more about energy issues pertaining to IT data center and data infrastructure topics? Do you have a solution or technology or a success story that you would like to share with us pertaining to data storage and server I/O energy optimization strategies?  Do you need assistance in developing, validating or reviewing your strategy or story? Contact us at: info@storageio.com or 651-275-1563 to learn more about green data storage and server I/O or to schedule a briefing to tell us about your energy efficiency and effectiveness story pertaining to IT data centers and data infrastructures.

Disclaimer and note:  URL's submitted for inclusion on this site will be reviewed for consideration and to be in generally accepted good taste in regards to the theme of this site.  Best effort has been made to validate and verify the URLs that appear on this page and website however they are subject to change. The author and/or maintainer's) of this page and web site make no endorsement to and assume no responsibility for the URLs and their content that are listed on this page.

Chapter 5 "Measurement, Metrics, and Management of IT Resources" in the book "The Green and Virtual Data Center" (CRC Press) takes a look at the importance of being able to measure and monitor to enable effective management and utilization of IT resources across servers, storage, I/O networks, software, hardware and facilities.

There are many different points of interest for collecting metrics in an IT data center for servers, storage, networking and facilities along with various points of interest or perspectives. Data center personal have varied interest from a facilities to a resource (server, storage, networking) usage and effectiveness perspective for normal use as well as planning purposes or comparison when evaluating new technology. Vendors have different uses for metrics during R&D, Q/A testing and marketing or sales campaigns as well as on-going service and support. Industry trade groups including 80 Plus, SNIA and the green grid along with government groups including the EPA Energy Star are working to define and establish applicable metrics pertinent for Green and Virtual data centers.

To help put some things into context, stimulate thought and discussion, the above figure shows in the lower left a simple energy guide sticker label found on many common appliances based on some form of use. In the top left there is a different form of energy usage label in this case the EPA Fuel Economy Estimates reflecting amount of work or activity performed per unit of energy (miles per gallon city or highway).

Also shown in the middle of the slide are EPA categories or what are known in the IT server and storage environments as tiers and price bands of different solutions ranging from utility to small and low cost solutions being compared over city, highway, high-speed, with air-conditioning among other different applicable activity to show how to compare and contrast different vehicles. Also shown are best practices and driving tips. Food for thought!





Data center Efficiency = (IT equipment / Total facility power) * 100

Shows a ratio of how well a data center is consuming power


Data center Performance Efficiency = Effective IT workload / total facility power

Shows how effective data center is consuming power to produce a given level of service or work such as energy per transaction or energy per business function performed


Power usage effectiveness = Total facility power / IT equipment power

Inverse of DCE

Kilowatts (kw)

Watts / 1,000

One thousand watts

Annual kWh

kWh x 24 x 365

kWh used in on year

Megawatts (mw)

kW / 1,000

One thousand kW


watts x 3.413

Heat generated in an hour from using energy in British Thermal Units. 12,000 BTU/hour can equate to 1 Ton of cooling.


1,000 watt hours

The number of watts used in one hour


Amps x Volts (e.g. 12 amps * 12 volts = 144 watts)

Unit of electrical energy power


BTU/hour x 0.293

Convert BTU/hr to watts


Watts / Amps (e.g. 144 watts / 12 amps = 12 volts)

The amount of force on electrons


Watts / Volts (e.g. 144 watts / 12 volts = 12 amps)

The flow rate of electricity

Volt-Amperes (VA)

Volts x Amps

Sometimes power expressed in Volt-Ampres


Volts x Amp / 1000

Number of kilovolt-ampres


kVA x power-factor

Power factor is the efficiency of a piece of equipments use of power


kW / power-factor



1U = 1.75”

EIA metric describing height of equipment in racks.


Activity / Watt Amount of work accomplished per unit of energy consumed. This could be IOPS, Transactions or Bandwidth per watt. Indicator how much work and how efficient energy is being used to accomplish useful work. This metric applies to active workloads or actively used and frequently accessed storage and data. Examples would be IOPS per watt, Bandwidth per watt, Transactions per watt, Users or streams per watt. Activity per watt should also be used in conjunction with another metric such as how much capacity is supported per watt and total watts consumed for a representative picture.

IOPS / Watt

Number of I/O operations (or transactions) / energy (watts)

Indicator of how effectively energy is being used to perform a given amount of work. The work could be I/Os, transactions, throughput or other indicator of application activity. For example SPC-1 / Watt, SPEC / Watt, TPC / Watt, transaction / watt,  IOP / Watt.

Bandwidth / Watt GBPS or TBPS or PBPS / Watt Amount of data transferred or moved per second and energy used. Often confused with Capacity per watt This indicates how much data is moved or accessed per second or time interval per unit of energy consumed. This is often confused with capacity per watt given that both bandwidth and capacity reference GByte, TByte, PByte.

Capacity / Watt

GB or TB or PB (storage capacity space / watt

Indicator of how much capacity (space) or bandwidth supported in a given configuration or footprint per watt of energy. For inactive data or off-line and archive data, capacity per watt can be an effective measurement gauge however for active workloads and applications activity per watt also needs to be looked at to get a representative indicator of how energy is being used

Mhz / Watt

Processor performance / energy (watts)

Indicator of how effectively energy is being used by a CPU or processor.

Carbon Credit

Carbon offset credit

Offset credits that can be bought and sold to offset your CO2 emissions

CO2 Emission

Average 1.341 lbs per kWh of electricity generated

The amount of average carbon dioxide (CO2) emissions from generating an average kWh of electricity

Various power, cooling, floor space and green storage or IT  related metrics

Metrics include Data center Efficiency (DCiE) via the greengrid which is the indicator ratio of a IT data center energy efficiency defined as IT equipment (servers, disk and tape storage, networking switches, routers, printers, etc) / Total facility power x 100 (for percentage). For example, if the sum of all IT equipment energy usage resulted in 1,500 kilowatt hours (kWh) per month yet the total facility power including UPS, energy switching, power conversation and filtering, cooling and associated infrastructure costs as well as IT equipment resulting in 3,500 kWh, the DCiE would be (1,500 / 3,500) x 100 = 43%. DCiE can be used as a ratio for example to show in the above scenario that IT equipment accounts for about 43% of energy consumed by the data center with in this scenario 57% of electrical energy being consumed by cooling, conversion and conditioning or lighting.

Power usage effectiveness (PUE) is the indicator ratio of total energy being consumed by the data center to energy being used to operate IT equipment. PUE is defined as total facility power / IT equipment energy consumption. Using the above scenario PUE = 2.333 (3,500 / 1,500) which means that a server requiring 100 watts of power would actually require (2.333 * 100) 233.3 watts of energy that includes both direct power and cooling costs. Similarly a storage system that required 1,500 kWh of energy to power would require (1,500*2.333) 3,499.5 kWh of electrical power including cooling.

Another metric that has the potential to have meaning is Data center Performance Efficiency (DCPE) that takes into consideration how much useful and effective work is performed by the IT equipment and data center per energy consumed. DCPE is defined as useful work / total facility power with an example being some number of transactions processed using servers, networks and storage divided by energy for the data center to power and cool the equipment. An relatively easy and straightforward implementation of DCPE is an IOPs per watt measurement that looks at how many IOPs can be performed (regardless of size or type such as reads or writes) per unit of energy in this case watts.

DCPE = Useful work / Total facility power, for example IOPS per watt of energy used

DCiE = IT equipment energy / Total facility power = 1 / PUE

PUE = Total facility energy / IT equipment energy

IOPS per Watt = Number of IOPs (or bandwidth) / energy used by the storage system

The importance of these numbers and metrics is to focus on the larger impact of a piece of IT equipment that includes its cost and energy consumption that factors in cooling and other hosting or site environmental costs. Naturally energy costs and CO2 (carbon offsets) will vary by geography and region along with type of electrical power being used (Coal, Natural Gas, Nuclear, Wind, Thermo, Solar, etc) and other factors that should be kept in perspective as part of the big picture. Learn more in Chapter 5 "Measurement, Metrics, and Management of IT Resources" in the book "The Green and Virtual Data Center" (CRC) and in the book Cloud and Virtual Data Storage Networking (CRC).

Green IT is about enabling efficient, effective and productive information services delivery. There is a growing green gap between green hype messaging or green washing and IT pain point issues including limits on availability or rising costs of power, cooling, floor-space as well as e-waste and environmental health and safety (PCFE). To close the gap will involve addressing green messaging and rhetoric closer to where IT organizations pain points are and where budget dollars exists that can address PCFE and other green related issues as a by-product. The green gap will also be narrowed as awareness of broader green related topics coincide with IT data center pain points, in other words, alignment of messaging with IT issues that have or will have budget dollars allocated towards them to sustain business and economic growth via IT resource usage efficiency. Read more here.

(Video) The Other Green - Storage Efficiency and Optimization - Click here to view the video

Read more about Green IT and efficient computing trends at the StorageIO Blog by clicking here

StorageIO Blog

There are many aspects to "Green" Information Technology including servers, storage, networks and associated management tools and techniques. The reasons and focus of "Green IT" including "Green Data Storage", "Green Computing" and related focus areas are varied to address diverse needs, issues and requirements including among others:

  • Power, Cooling, Floor-space, Environmental (PCFE) related issues or constraints
  • Reduction of carbon dioxide (CO2) emissions and other green house gases (GHGs)
  • Business growth and economic sustain in an environmental friendly manner
  • Proper disposal or recycling of environmental harmful retired technology components
  • Reduction or better efficiency of electrical power consumption used for IT equipment
  • Cost avoidance or savings from lower energy fees and cooling costs
  • Support data center and application consolidation to reduce cost and management
  • Enable growth and enhancements to application service level objectives
  • Maximize the usage of available power and cooling resources available in your region
  • Compliance with local or federal government mandates and regulations
  • Economic sustain and ability to support business growth and service improvements
  • General environmental awareness and stewardship to save and protect the earth

While much of the IT industry focuses on CO2 emissions footprints, data management software and electrical power consumption, cooling and ventilation of IT data centers is an area of focus associated with "Green IT" as well as a means to address more effective use of electrical energy that can yield rapid results for many environments. Large tier-1 vendors including HP and IBM among others who have a IT and data center wide focus have services designed to perform quick assessments as well as detailed analysis and re-organization of IT data center physical facilities to improve air flow and power consumption for more effective cooling of IT technologies including servers, storage, networks and other equipment.

Similar to your own residence, basic steps to improve your cooling effectiveness can lead to use of less energy to reduce your budget impact, or, enable you to do more with what you already have with your cooling capacity to support growth, acquisitions and or consolidation initiatives. Vendors are also looking at means and alternatives for cooling IT equipment ranging from computer assisted computational fluid dynamics (CFD) software analysis of data center cooling and ventilation to refrigerated cooling racks some leveraging water or inert liquid cooling.

Various metrics exists and others are evolving for measuring, estimating, reporting, analyzing and discussing IT Data Center infrastructure resource topics including servers, storage, networks, facilities and associated software management tools from a power, cooling and green environmental standpoint. The importance of metrics is to focus on the larger impact of a piece of IT equipment that includes its cost and energy consumption that factors in cooling and other hosting or site environmental costs. Naturally energy costs and CO2 (carbon offsets) will vary by geography and region along with type of electrical power being used (Coal, Natural Gas, Nuclear, Wind, Thermo, Solar, etc) and other factors that should be kept in perspective as part of the big picture.

Consequently your view and needs or interests around "Green" IT may be from a electrical power conservation perspective to maximize your power consumption or to adapt to a given power footprint or ceiling. Your focus around "Green" Data Centers and Green Storage may be from a carbon savings standpoint or proper disposition of old and retired IT equipment or from a data center cooling standpoint. Another area of focus may be that you are looking to reduce your data footprint to align with your power, cooling and green footprint while enhancing application and data service delivery to your customers.

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