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ECOBAY: Closed loop water cooled

server cabinet for data centers

Mirko Stevanovic, M.A.Sc. Mech. Eng.New Product DesignSanmina-SCI Enclosure SystemsToronto, Canada

IBM Power and Cooling Technology Symposium, September 2008

Sanmina-SCI Confidential

Preamble: Clear Market Trends

“We are currently in the biggest data center construction boom in history. At the same time, this boom is dramatically weakening the future flexibility and financial performance of Information Technology. How can this be?

It's the old domino effect at work again.” The new “must know”topic for senior executives responsible for the energy consumption and costs of today’s increasingly high-density computing environments is the true economic and environmental costs of enterprise computing and what steps must be taken, beginning now, to control them”.

Source: Ken Brill, Director of “The Uptime Institute” Sept 2008


Market Need

Current Requirement:

• Integrated enclosures with 30kW thermal management systems thatprovide optimum environment for high density “clustered computing”.

• Scalable systems deployable in large or small quantities in new or existing sites.

• Simple, efficient & highly reliable thermal management technology that enables cost savings in infrastructure, real estate and power.

• “Green” products with low acoustic output, built in ‘fail safe’ devices and appropriate redundancy of critical systems.

• Optional power distribution, environmental monitoring, smoke detection & fire suppression.


High Density Blade Servers introduce new considerations:

� Heat Loads continue to Rise

� Heat Densities continue to Increase

� Conventional Cooling can not cope (see next slide)

� Efficiency and reliability of traditional Data Center declines and “De-population” of room occurs when input power exceeds values >3.5kW per enclosure

� Data Centers with raised floor (Plenum) cooling systems cannot support input power values of >7kW per enclosure without overheating problems

� New generation processors in high density configurations can require as much as 25kW+ input power per enclosure

What is The Problem?






Sanmina’s ECOBAY Solution

Our Solution:

� An integrated enclosure using chilled water in a closed loop system to provide cooling & facilitate heat removal at a rate3630 times greater than the same volume of air.

History

� Sanmina was the first to develop & market a product of this type.

Update

� In December 2007 the last of 5 ECOBAY Patents was granted by the USPTO providing Sanmina with greatly increased protection against Infringement of key elements of it’s design.


ECOBAY Thermal Management System

Chilled Water ►

from Chiller

◄ Warmed Water

to Chiller

Cooling Air Heated Air

Thermal Core

� High Performance, Closed Loop Water Cooled Cabinet.

� Heat generated inside the cabinet is removed by chilled water.

� Minimal stress on room cooling system.

� 42RU of useable space.

� Constant air temperature in front of servers.

� Uniform air distribution in front of servers.

What is ECOBAY?


What Ecobay Offers

Solution for Customer Needs:

� Improved Cooling

� Sealed system

� Noise Reduction

� Dense packing/heat density per area

� Lower energy cost

� Smoke Detection/Fire suppression

� Monitoring

� Improved work area

RELIABILITY

PERFORMANCE

SECURITY

COST


ECOBAY Solution

For Blade Servers

7 kW 35 kW24 kW1 kW

Low Density Solution Current Generation High Density Blades

NGR Blade’s & MultiProcessor Enterprise

Air Cooled Racks

For Current Servers

ECOBAY New Generation








� Five Blade Chassis operating at full power ~ 18 kW

� 0.76 l/s (12 gpm) Water at 14°C (57°F)

� Blades operated within manufacturers specs.

� RH 40% - 60% inside cabinet

� Acoustic performance – “very good”


W 700Fan Power

Varies by manufacturerCFM1680Server Fans Background

kPa48.3psi7.0Water ∆P

°C19.9°F67.8Water Disch

°C7.1°F12.8Water Rise

°C23.4°F42.1Air ∆T

°C49.8°F115.5Hot Air Disch

°C22.8°F73.0Cold Air SupplyResults

l/sec0.76USgpm12Water Flow

degC12.8°F55Water Temp

kW24.0kW24Heat LoadInputs

SI unitsPerformance Table (in US units)



Typical Mechanical Layout


ECOBAY For Smaller Projects- 324 KW LOAD

225 kVA/pdu

4 Power Distribution Units

18# of Cabinets @ 18kW each

324.0 kWELECTRICAL

910 FT2TOTAL ROOM FT2

ECOBAY 1-18 High Density Enclosures

225 kVA/pdu4 Power Distribution Units

65# of Cabinets @ 5kW each

324.0 kWELECTRICAL

2170 FT2TOTAL ROOM FT2

Traditional Air-Cooled Cabinets


Cabinet Monitoring

�Temperature in front and back of servers

�Fans/Power Supply Status

�Humidity

�Actual water leakage

�Door security

�Incipient Smoke Detection

�Fire Suppression Activation

To Central Monitor or Building BMS


CABLE/POWER MANAGEMENT


Rack Mounted Smoke/Fire Suppression with Optional VESDA


Fully monitoredsmoke detection and fire suppression

Fire Suppression


Closed-Loop Water-Cooled SystemRESILIENCY

How do we make the Cabinet Cooling System Reliable ?

� Redundant Pumps, Heat Exchangers, and Chillers� Matrix piping system� Redundant Fans� Redundant power supplies� Preemptive Monitoring & Alarm System

Fall Back Strategy

� If the cooling in a cabinet fails for any reason:� Automatic door release. � Room air temporarily removes heat. � Door release has dual power & dual thermostats

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Thank You

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