Data Center Server Rack Strategies

42U Confidential ©2008 42U All rights reserved Slide 1

Enclosure Strategies for Efficiency – Data Center Efficiency Best-

Practice Starts with Your Racks

September 5, 2008

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Overview

• Business Factors

• Data Center Strategy

• Rack Designs

• Rack Arrangement

• Rack Configuration

• Summary

• Q&A


Business Factors

• Service Level Agreement (SLA)– N+1 and 2N Requirements

• Information Technology Infrastructure Library (ITIL)

• Total Cost of Ownership (TCO)

• Stranded Capacity


Efficiency Drivers

• Rising Energy Costs• Physical Limitations

– Building Infrastructure– Utility Capabilities

• Mandates– Carbon Tax– Utility Initiatives– C-Level Need for ‘Green’ Message


Energy Cost Projection


Source: Uptime Institute

Data Center Strategy

• Virtualization

• Blades

• Application Expansion

• Facilities

• Power Management

• Air Handling Infrastructure


Rack kW Trend

• 10 kW of Load Becoming the Norm

• Continued Increasing Density


Source: IDC, The Impact of Power and Cooling on Data Center Infrastructure

Energy Consumers

• 70% of Power Consumption Goes to the Infrastructure

• Over Twice that of the IT Equipment


Source: The Green Grid, Guidelines for Energy-Efficient Datacenters

Functional Limitations

• CRACs Are Reaching Their Functional Limits


Source: Aperture, Managing Today’s Data Centers, Avoiding the Impending Crisis

Rack Designs

• 2-, 4-Post Open– Low Heat Equipment

• Perforated– Ambient Cooling– Maximum Thermal Airflow

• Enclosed– Airflow Control– In-Row Cooling


Efficiency Strategies

• Variable-Speed Fans• Power Design• Modularity• Airflow Control

– Perforated Tile Configuration– Blanking Panels– Floor Grommets– Containment


Density Distribution

• Close-Coupled Cooling

• High-Density Checkerboard


Source: APC, Ten Cooling Solutions, #42

Confirmation of Fundamentals

• Impact of a Single Blanking Panel

• Consistent Results For– Floor Leaks– Tile

Arrangement

Top of rack

Middle of rack


Results of Floor Tile Tuning

• Improved Under-Floor Pressure

• Measurable Correlation to Cooling Efficiency

Under-Floor Pressure

Rack-Top Temperatures


Rack Management

• Hot/Cold Aisle

• Density Distribution Scheme• Modularity• Structured Cabling


Source: APC, Ten Cooling Solutions, #42

Airflow Containment

• Aisle Containment

• 30-49% Increase in CRAH/CRAC Capacity


Source: Accenture/LBNL Air Flow Study 2007

Hot Aisle Containment

• 40% Reduction in Fan Energy


Source: Accenture/Oracle Data Center Air Flow Management – Hot Aisle Containment

Cold Aisle Containment

• 75% Reduction in Fan Energy


Source: Accenture/LBNL Air Flow Study 2007

Efficiency Checklist

• Reduce Your Electric Bills– 20-50% for

No/Low-Cost Design and Operations Changes


Source: The Green Grid, Guidelines for Energy-Efficient Datacenters

Summary

• Consider the Big Picture

• Rack Configuration Plan

• Rack Layout Plan

• Airflow Containment

• Efficiency Improvement Plan


Q&A


For More InformationContact Your 42U

Data Center Efficiency Consultant:

1-800-638-2638 or www.42U.com

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