Session PAC3.5

5 Keys to Achieving ultra-low PUEs

Chris Yetman COO, Vantage Data Centers

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Session Title and Description

5 Keys to Achieving ultra-low PUEs Chris Yetman, COO Vantage Data Centers The five essentials for ultimate energy efficiency. We'll look at the pillars of success: equipment, precision measurement and control, voltage distribution, and pressure drop. We'll explore the gains of pushing outside the recommended ASHRAE zone into allowable conditions. Most important, we'll look at what it means to embrace hardware failure and instead focus on resilience and recovery; the true key to ultra-low PUEs.

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Getting from here to there…

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Chris Yetman

CHIEF OPERATING OFFICER

Before Vantage: SVP Process and Technology at Integra VP of Infrastructure Operations at AWS SVP of Operations at Level 3 Communications

Biography

Thinking outside the traditional operational mindset, Chris is all about embracing radical data center designs that will make a real impact in the marketplace — whether it’s the Open Compute Project or his “hotter is better” approach to running data centers. It’s that kind of innovative, industry pushing mentality that led Vantage to appoint him COO. Chris has over 25 years of operations, engineering, and IT experience in the Internet infrastructure industry, including his former position as VP of Infrastructure Operations at Amazon Web Services. Lucky for Vantage, Chris is committed to running the best data centers on the planet, both in terms of IT and operations.

Who am I?

“Why are we afraid to allow equipment to fail? Why are we working so hard to avoid breaking a server? Too often we are needlessly cautious when it comes to hardware. Too often we make IT decisions based on fear. These decisions cost us more than we suspect.” -Chris Yetman in

5 Essential Steps for Maximizing Power Usage in that Data Center of Yours

“Chris Yetman’s call to embrace failure would seem counterintuitive. However, there is method to his seeming madness. [Yetman] had worldwide responsibility for ops and network for Amazon’s data centers and oversaw the number of servers increase 10x.” - Steve Wexler in

The Future of Datacenters: Embrace

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Step 1: Be Brave!

"One of our key findings has been the lack of a consistent pattern of higher failure rates for higher temperature drives or for those drives at higher utilization levels .” ASHRAE A2 Allowed Temp: 50°-95° Humidity: 20-80%

Dew Point:

Up to 63° - Failure Trends in a Large Disk Drive Population (Google research study)

ASHRAE A2 Recommended

Temp: 65°-80° Humidity: 42-60%

Dew Point:

Up to 59°

Operating Envelope

http://static.googleusercontent.com/media/research.google.com/en/us/archive/disk_failures.pdf

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Embrace Failure!

• Hardware is a commodity. Don’t be afraid to let it die. In fact, build with failure in mind. • Stop trying to prevent hardware failure… it’s not worth the cost. Build with the knowledge that hardware will fail and instead focus on recovery. 7

Operating Envelope

1.4

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PUE 1.2

Being green = saving green $$

$160K per MW per year

Cost

• • Maniacally focus on data center efficiency + running at the higher end of temperature and humidity = Driving down PUE wastes less power and creates more green in your pocket!

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Embracing failure in the real world

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Step 2: Get the foundation right

High-voltage power distribution High-efficiency mechanical / electrical equipment Measurement Proper containment of hot and cold aisles

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Step 3: Maintain control (infinitely!)

Monitor Adjust Recirculate

Precise temperature control 11

Higher Voltage Step 4: Increase the voltage

480V to the rack

Reducing losses Reducing current Reducing conductors 12

Step 5: Reduce pressure drop

• Model the pressure drops • Change filters when the cost of pushing air becomes too high • Design for convective air flow when possible 13

Use Case: What have we achieved in our facilities?

• • • • Two new facilities commissioned below 1.2 PUE: 1.12 - Santa Clara, CA 1.14 – Quincy, WA Reductions from 1.45 to below 1.3 PUE in existing facilities 14

Lessons learned along the way

• • • • Getting to infinite control —measure, track and adjust constantly Pick filters that don’t disintegrate Measure at the equipment you’re supplying air to Widening RH ranges is key for getting more outside air economization 15

The 5 Keys to improving PUE

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Be brave. Embrace failure 2.

Maintain infinite control 3.

Pick the right equipment 4.

Increase the voltage 5.

Reduce pressure drop 16

Chris Yetman COO, Vantage Data Centers [email protected]

Thank you!

@cyeti www.linkedin.com/in/chrisyetman 17