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Paolo Gemma / Yong-Woon KIMPaolo Gemma / Yong-Woon KIM

Green data centersGreen data centers

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ContentsContents

ⅡⅡBest practices for green data centers

ⅠⅠ Problem statements

WP3/5 related activitiesIIIIII

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Problem statementsII

-4-• Broadband• IPTV

• Smart Grid

Network

…

…

…

Data center works as a Hub and information resources are being concentrated on

the data center.

Servers

Storage

Infra

Security

…

…

. . .Energy

Internet

Portal

Game

Telecom

DC

Roles of data centersRoles of data centers

• e-Government

• public service

• banking

-5-Ventilation

Server farms

Batteries

UPS

KT

Views of data centerViews of data center

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2 times per 5

years

Power consumption:

CAGR 45%

73 data centers (36

providers)

Expansion of data centers in Korea World data center power consumption

• Equal to energy consumption of all households of 1.1 million population of a city (1,260 GWh)

• 2% of world power consumption, equal to energy consumption of world air flights

• 100 billion KWh estimated in 2011 (equal to that of Paris for 16 years)

Data centers and power consumptionData centers and power consumption

530 GWh

730 GWh

1,120 GWh

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2,500 in 74 countries

73 data centers in Korea

Status of data centers in the world and KoreaStatus of data centers in the world and Korea

Public sector (9)

Economy sector (9)

Private sector (25)

Service provider

s (30)

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Critical issues in DC: cooling and power consumptionCritical issues in DC: cooling and power consumption

• Space shortage in DC estimated due to fast increasing servers and

storages• Cost of power and cooling will be increased in 4 years by 47%. It

will take 71% of installation cost of new servers.

• Space shortage in DC estimated due to fast increasing servers and

storages• Cost of power and cooling will be increased in 4 years by 47%. It

will take 71% of installation cost of new servers.

$0

$50

$100

$150

$200

$250

$300

1997

1998

1999

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

Installed Base(M Units)

Spending(US$B)

0

5

10

15

20

25

30

35

40

45

50

1996

Power and cooling costs x8

Server mgmt and admin costs x4

New server spending

SOURCE: IDC, ‘Worldwide Server Power and Cooling Expense 2006-2010,’ Document #203598, Sept. 2006

Heat load per space for H/W

American Society of Heating, Refrigerating, and Air conditioning Engineers committee

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Energy efficiency improvement in data centersEnergy efficiency improvement in data centers

Source: IBM Estimates for $50M data center

Case study : 1,851 m2 data center in US

Cumulative cost of data center operations

75% of operation cost related to power consumption

Green data center: 35% of cost savings compared to existing and non-green data centerC

um

ula

tiv

e C

os

t o

f O

pe

rati

on

s (

$M

illi

on

s)

Energy CostStaffingBldg. Maint. & Mgmt.R E Tax

Year

$50

$100

$150

$200

$250

01 2 3 4 5 6 7 8 9 1011 12 1314 15 16 1718 19 20

Green DC (PUE=1.5)

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Energy efficiency is a critical issue at data centersEnergy efficiency is a critical issue at data centers

* Source: IBM engineering estimates, 2008

Ventilation facilities, 20%Contingency

9%

General Contractor Fee

8%

Architect / Engineer

5%

Commissioning2%

Fit-Up Costs9%

Building maintenance4%

Cost of ventilation-relevant facilities

CoolingPlant72%

Raised Floor Cooling28%

Cost of power-relevant facilities

Generator45%

UPS27%

Power Distribution28%

Power facilities,36%

Shell7%

Total cost of data center establishment

“60% of total establishment cost of data center is caused by energy-relevant facilities.”

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What are future issues which will be raised in 2 years?What are future issues which will be raised in 2 years?

Source: Bathwick Energy Efficiency Benchmark Tool

Survey result for data center experts

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Best practices for green data centersIIII

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Keywords of Green Data centerKeywords of Green Data center

Energy efficiencyEnergy efficiency

Modularity & ScalabilityModularity & Scalability

Ecology and SustainabilityEcology and Sustainability

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How to make Green Data CenterHow to make Green Data Center

Source: HP Green Datacenter service/solution

1. Downsize, Reuse and Recycle 1. Downsize, Reuse and Recycle

2. Avoid over-specification for equipment 2. Avoid over-specification for equipment

3. Minimize energy consumption 3. Minimize energy consumption

4. Consider energy efficiency in building design 4. Consider energy efficiency in building design

5. Use integration and virtualization 5. Use integration and virtualization

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Green Datacenter TransformationGreen Datacenter Transformation

Source: HP Green Datacenter service/solution

StoragePool

NetworkPool

ComputePool

Virtualisation/Utility

Standardisation/Automation

Application Rationalization

Consolidation

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Best practices for green data centersBest practices for green data centers

Sharing of physical resources via virtualization

Downsize of installation space

Virtualization

Integration of storages into a pool via virtualization and improvement of its utilization

Storage integration

Management of hot spots via analysis of power consumption and usage patterns

Hot spot management

Avoidance of energy leakage by radiation protection

Installation of no windows in certain areas

Building

Energy diagnosis and estimation

High efficient UPS Design of scalable UPS load Space savings by use of DC Use of high efficient lightings

Power

Individual control of lightings Management of peak power Real-time PUE management

Management

Relocation of equipment by fluid dynamics

Inducement of cold air in winter season

Cooling

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Energy savings effect Energy savings effect

Best practices Savings Description

Virtualize servers 10 - 40%Consolidation of applications onto fewerservers, typically blade servers

Right-size NCPI 10 - 30%Using a modular, scalable power and coolingarchitecture

More efficient air conditioner architecture

7 – 15% Row-oriented cooling and shorter air paths

Economizer modes of air conditioners

4 – 15%Choosing economizer options-offered air conditioners

More efficient floor layout 5 – 12%hot-aisle / cold-aisle arrangement withsuitable air conditioner locations

More efficient power equipment 4 – 10%Best-in-class UPS, & light load efficiency rather than full load efficiency

Coordinate air conditioners 0 – 10%One air conditioner may actually heat while another cools; and One may dehumidify while another humidifies.

(1) APC White paper #114 “ Implementing Energy Efficient Data Centers”, 2006

NCPI: network-critical physical infrastructure

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Energy efficiency improvement for ICT equipmentEnergy efficiency improvement for ICT equipment

Prospective elements of ICT equipment to improve energy efficiency are CPU, power supply, cooling fan, storage, etc.

Elements Guidance

CPU

� Use High performance CPU

� Minimize power consumption during idle time (AMD’s PowerNoW!, Intel’s SpeedStep, and IBM’s EnergyScale)

� Change cooling method (use water cooling, and use copper plate rather than steel plate)

� Use multi-core CPU

Power supply � Use energy efficient power supply

Cooling fan

� Use variable-speed cooling fan according to heat of server

� Use small number of big cooling fan rather than large number of small cooling fan

� Change internal configuration to improve cooling effects

Storage

� Use external disks rather than internal disks

� Use SSD-like memory disks

� Use high capacity and low power disks like SATA

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WP3/5 related activitiesIIIIII

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ITU-T SG5 Activities on data center

• WP3/5 planned a series of recommendations to cover data centers impact.– L.DC Data Center best practices

– L.metrinfra Metrics for infrastructure and data center

– L.measinfra Measurement method for infrastructure and Data Center

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L.DC Data Center best practices

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L.metrinfra Metrics for infrastructure and data center

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L.measinfra Measurement method for infrastructure and

Data Center

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