21745 Sir Timothy Drive

Located just minutes from the nation's capital, 21745 Sir Timothy Drive is located on more than 20 acres of Northern Virginia's bustling Data Centre Alley.

This state-of-the-art data centre delivers the ultimate in data centre performance, reliability and energy efficiency across 326,000 gross square feet, with critical power capacity of 28.8 megawatts.

Varied room sizes and load densities suit a wide range of users—from the world’s most powerful brands to companies experiencing unprecedented growth.

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Available services in Ashburn

Data Centres

Check out our full list of services including colocation, build to suit, and a focus on sustainability for a complete data centre ecosystem strategy.


Interconnection is at the heart of our Digital Realty data centres enabling secure, fast, and reliable interconnect connectivity throughout our ecosystem.


Whether you need to move off-premise or connect multiple data centres, Digital Realty has the reliable solutions for your private and hybrid clouds.

Facility Specs

  • 1 story
Utility Power Capacity
  • 34,500 kW
Total Building Size
  • 220,000 ft²
Flood Risk
  • Outside 100 year flood plain
Seismic Rating
  • Zone O
UPS Power Capacity (kW)
  • 31,200 kW
UPS Redundancy
  • 2N
Max. Power Density
  • 105 watts/ft²
Generator Power Capacity (kW)
  • 12,500 kW
Cooling Plant Redundancy
  • 2N
Roof Construction
  • FM 1-90
Max. Floor Loading (lbs./sqft.)
  • 250 ft²
Security Infrastructure
  • Biometric / Card Access
  • CCTV
Compliance Certifications
  • SOC1
  • ISO 27001
  • PCI-DSS planned 1Q2019
Sustainability Certifications
  • LEED Gold
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