Cooling Strategies for New Technology Dial in to hear audio: U.S.: 1-800-479-9001 Passcode: 3081145 Technical assistance: *0

High Density Cooling: Maintaining Availability and Lowering TCO Steve Madara VP and General Manager Liebert Precision Cooling Business Emerson Network Power

High Density Cooling: Maintaining Availability and Lowering TCO

Agenda New challenges for the data center Cooling implications Room cooling strategies Supplemental cooling benefits A look ahead

New challenges for the data center

Cooling implications

Room cooling strategies

Supplemental cooling benefits

A look ahead

New Challenges for the Data Center

Trends affecting IT operations Technology needs to keep pace with business demands Large data sets, complex applications mean more processing power More automation means greater network criticality Historically, power and cooling issues have been an afterthought for IT managers Rising power costs are forcing enterprises to examine the problem Represent a significant ongoing management expenses IT departments moving toward service oriented structure Increase focus to control overhead costs Paradigm shift in purchase criteria

Technology needs to keep pace with business demands

Large data sets, complex applications mean more processing power

More automation means greater network criticality

Historically, power and cooling issues have been an afterthought for IT managers

Rising power costs are forcing enterprises to examine the problem

Represent a significant ongoing management expenses

IT departments moving toward service oriented structure

Increase focus to control overhead costs

Paradigm shift in purchase criteria

Time shrinks all things electronic 1 GB 1984 4 GB 2006

More power in less space = hotter racks

Data center capacity constraint Source: DCUG Survey Fall 2006

Capacity concerns are shaping decisions When Data Centers Will Run Out of Capacity Source: DCUG Survey Fall 2006

Energy efficiency is top-of-mind Energy Efficiency Standard for Servers Moves Forward EPA, vendors finalize draft of protocol; adoption may hinge on user pressure Patrick Thibodeau , Computerworld Daily Updates Big Blue announces 'Big Green' initiative IBM's $1 billion-a-year initiative is aimed at building datacenters that consume less energy Deni Connor IDG News Service ENERGY ROUNDUP Green Grid Looks For New Data Center Energy-Efficiency Ideas By Marianne Kolbasuk McGee InformationWeek WSJ.com’s look at energy news

Cooling Implications

High heat densities create cooling challenges Uneven heat loads Difficulty cooling the top of racks Unpredictable equipment additions mean unpredictable cooling need changes

Uneven heat loads

Difficulty cooling the top of racks

Unpredictable equipment additions mean unpredictable cooling need changes

Increasing equipment diversity complicates cooling Average server replacement cycle: 3-4 yrs.

Cooling offers opportunity for efficiency improvement Data Center Power Draws Source: EYP Mission Critical Facilities Inc., New York

Understanding the basics Heat generated is directly related to the server power (100%) As server power increases (kW), the airflow (CFM) through the rack increases proportionately Raised floor tiles are limited in airflow (about 500-1000 CFM) Higher entering air temperatures on a cooling unit will provide more capacity and increased efficiency Higher density servers will have a greater range of temperatures leaving the rack over time (larger swings of server load) Fan horsepower to move the air is significant and all the power turns into heat (100 kW cooling unit uses typically a 10 HP motor that generates 8.5kW of heat)

Heat generated is directly related to the server power (100%)

As server power increases (kW), the airflow (CFM) through the rack increases proportionately

Raised floor tiles are limited in airflow (about 500-1000 CFM)

Higher entering air temperatures on a cooling unit will provide more capacity and increased efficiency

Higher density servers will have a greater range of temperatures leaving the rack over time (larger swings of server load)

Fan horsepower to move the air is significant and all the power turns into heat (100 kW cooling unit uses typically a 10 HP motor that generates 8.5kW of heat)

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