Potomac AFCOM Quarterly Meeting Hosted by: DuPont Fabros Technology

DFT’s ACC7 Data Center

ACC4 – 172,000 RSF; 36.4 MW ACC5 – 176,000 RSF; 36.4 MW ACC6 – 130,000 RSF; 26.0 MW ACC7 1 – 246,000 RSF; 41.6 MW DuPont Fabros Technology Data Centers 4 Markets, 11 Data Centers, 240 MW Critical Load NJ1 1 – 176,000 RSF; 36.4MW CH1 – 231,000 RSF; 36.4 MW SC1 1 – 176,000 RSF; 36.4 MW VA3 – 147,000 RSF; 13.0 MW VA4 – 90,000 RSF; 9.6 MW ACC2 – 53,000 RSF; 10.4 MW ACC3 – 80,000 RSF; 13.9 MW Piscataway, NJ Santa Clara, CA Chicago, IL Northern Virginia COMPANY OVERVIEW: Founded in 1997, IPO in 2007 (NYSE: DFT) Owner, developer, and operator of highly reliable, highly efficient, carrier neutral wholesale data centers Eleven (11) Operating Data Centers with 240 megawatts (MW) of critical load capacity Largest clients include Facebook, Microsoft, Yahoo!, and Rackspace 1 Includes All Phases of Construction in Total RSF: Raised Square Feet MW: Megawatts Operating Properties

➔ Data Center Industry Trends ➔ Project Goals – Unravelling Trends ➔ ACC7 Building Overview ➔ Chiller Assist ➔ MV & the Isolated-Paralle UPS ➔ Proof of Concept Agenda

Examples:  Higher operating temperatures for servers leads to relaxed ASHRAE limits;  Aisle Containment – Tighter management of hot/cold air  All overhead solutions (power/network/grounding); eliminates the need for raised flooring  Auto-sensing power supplies don’t need 120/208V (240V)  Product application: Incorporating new products available on the market (MV)  Greater Security & Audit Requirements  Modular building approach/containers Industry Trends

Primary Goals: Create a Design that addresses Industry Trends By developing a product that Is cheaper to build on a per megawatt basis 2. Has lower maintenance costs 3. Has industry leading PUE Project Goals LOW BUILD COSTS LOW MAINT COSTS LOWEST PUE

SUPPORTING GOALS: 1. MODULAR – Where “modular” refers to a design which may be constructed expeditiously and unobtrusively in logical, incremental building blocks that help defer costs 2. FLEXIBILITY a. Offer a variety of room SIZES and LOAD densities b. Offer SECURITY options c. Support an array of CUSTOMER layouts d. Provisions for CONTAINER hook-ups Project Goals

Building Overview & Computer Room Details

UPS ROOMS: Centrally Located vs. Linear (14) UPS Rooms (28) 1600 kW UPS Units Vs. (32) 1300 kW (ACC5) GENERATOR ROOMS: (28) 2250 kW Units (14 Rms) Vs. (32) 2250 kW (ACC5) Building Layout 447,000 GSF; 405,000 NSF 41.6 MW Critical

28 Rooms 249,000 SQFT 1.48 MW (Base) per Room Computer Rooms 8 Divisible Rooms 4 into 750 kW 4 into 375 kW High Density Rooms Expandable to 2.0 MW by adding (2) PDU Xfmrs Room 6 is day 1 split into (2) 750kW Rooms

ACC7 - Computer Room Metrics Typical Computer Room ~8500 SqFt 1.486MW with ability for 2.0MW

ACC7 - Computer Room Details 2N Electrical Redundancy Total of (18) CRAH units (N+2 ) Expandable to (22) No Raised Floor Lay-in ceiling at 13’-0” CRITICAL DISTRIBUTION PANELS 1.5 MW PDU XFMR’s “A” & “B” B1 B2 A1 A2 A B CRAH (typical)

ACC7 – High-Density Computer Room 1.5 MW PDU XFMR’s “A” & “B” A B 2 nd Set PDU XFMR’s “A” & “B” A B High Density Solution with ability for 2.0MW

ACC7 - Base Computer Room w/ Cabs Flexible equipment layouts per Client preference 378 Cabinets shown

ACC7 – Subdivided Computer Room Steel Mesh Wall Segregates Room Into Smaller Offerings

More Stringent Security & Audit Requirements: TREND: Physical segregation between servers & infrastructure OPPORTUNITY: Provide flexible optional security galleries Introduce steel mesh fencing Provides physical separation Displaces minimum floor space NO modifications to elec/mech infrastructure Unraveling Trends – Security

ACC7 – Computer Room w/ Gallery Optional steel mesh Gallery walls segregate Client space from DFT equipment

HIGHER BRANCH CIRCUIT VOLTAGE SOLUTIONS: TREND - Phasing Out: 120V single phase circuits OPPORTUNITY: Utilize 230 or 240V ($$ Savings) Instant 2X power boost to standard busway products 225A bus at 208V = 65kW 225A bus at 415V = 130kW Single pole breakers in lieu of double-pole CB’s Unraveling Trends

ACC7 - Computer Room Busway Layout 1.5 MW PDU XFMR’s “A” & “B” A B B1 B2 A1 A2

Greater Server Tolerance For Higher T’s Higher Supply & Return Chiller Water T’s Greater Opportunity For Free Cooling Smaller Chillers & Pumps Greater Energy Savings Lower PUE Higher Supply & Return Air T’s Unraveling Trends

TREND: HIGHER OPERATING TEMPERATURES: SOLUTION: Water Side Economization Plant with Chiller assist Primary Chilled water production by heat exchangers to provide 65-70F water (regionally dependent) Year round contribution from heat exchangers with chiller assist as needed Increased chilled water temperature difference of up to 25°F (vs. the conventional 10°F). Chiller Assist

HIGHER OPERATING TEMPERATURES: Allows for more hours of FREE COOLING (economizer operation) and significantly smaller chillers and lower pumping horsepower Reduced CRAH fan horsepower by 60% versus traditional units, while delivering the same cooling capacity performance Requires greater management of hot and cold air. Containment is mandatory Chiller Assist

CRAH Cabinet Ceiling Space Aisle Containment – Greater management of hot/cold air

Medium Voltage & Isolated Parallel (I-P) UPS

Medium vs Low Voltage Distribution: TREND: Advances in MV circuit breakers, switchgear & PDUs OPPORTUNITY: MV Distribution in the Data Center Reduces feeders by factor of 7X Significant cost savings Increased Reliability Increased Flexibility Unraveling Trends – New Products

Medium Voltage - Advantages

Greater safety—lower arc flash ARC containing MV switchgear designs are PPE Category 0 under NFPA 70E Higher Reliability Cooler running ductbanks, fewer terminations Linear Actuated Breakers More reliable (fewer moving parts = longer lasting CB) Faster clearing times Greater flexibility in DC layout - longer feeders without huge cost Greener building—less copper, PVC, steel MV Advantages

Introducing the new “MV PDU” A potentially disruptive technology Deconstructed PDU with separate transformer and distribution panels Single “A” and “B” oil–filled PDU transformers replace the equivalent of ten (10) conventional 300kVA PDU’s Less footprint = greater cabinet yield MV Product Advantages “I’m back from the future!”

Outstanding Efficiency! 99.6% vs 97.5% for dry- type Significant overload capabilities: 150% continuously MV PDU

ACC7 Proof of Concept Room

Installed 200 cabinets & LB’s in CR1. Both aisle containment and rack chimneys demonstrated Installed 200 cabinets & LB’s in CR1. Both aisle containment and rack chimneys demonstrated

ACC7 Proof of Concept Room ACC7 Proof of Concept Room Various load configurations at full 2MW load tested & CRAH’s failed

Conclusions