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We chose to house our primary systems with AT&T. Their experience with data, networks and the Internet far exceeds all others. Additionally, their financial position not only affords them the ability to require the highest standards from staff and vendors, but also secures longevity.

AT&T's 201,590 square foot Internet Data Center is located in Watertown, Massachusetts on AT&T's OC48 / OC192 Global IP backbone. Their extensive public and private peering arrangements are designed to maximize your Internet reach and bandwidth capacity which ultimately optimizing performance.

Physical Security

  • To ensure your data's security, this facility is staffed 24 hours a day with on-site guards and equipped with both interior and exterior closed circuit television.
  • Access to and exit from the hosting and monitoring areas are controlled via highly secure mantraps, which consist of Biometric Palm Scan and Individual Personal Access Codes. These single entry, hardened portals are extremely effective at limiting access to the facility to authorized personnel only.
  • No external signage is used to indicate AT&T is in the building.
  • Stationary and fixed digital cameras with pan-tilt and zoom capability are placed throughout the center's interior, on the building perimeter and atop the roof. Security guards, located centrally in designated stations, monitor live images continually.

N.O.C.

  • The operations of all AT&T Internet Data Centers (IDC) are monitored by regional Network Operations Centers (NOC) with mirrored content displayed in other NOCs for failsafe network system diversity and redundancy. Network security is ensured by state-of-the-art software and hardware for network monitoring and routing, intrusion detection and filtering.
  • The NOC is staffed on a 24/7 basis by skilled network technicians and analysts, who continuously monitor the data center network infrastructure for any inconsistencies. Automated features and customized options help network managers to predict, and many times resolve, any problems before they arise.

Network Architecture

  • Internet Backbone Routers, Data Center Routers and Aggregation Switches are all cross-connected ensuring uptime if a switch or router malfunctions
  • Connections are comprised of multiple and diverse connections with diverse vendors.
  • Intermediate Distribution Frame (IDF) deliver Ethernet, Fast Ethernet or Gigabit Ethernet from the MDF to the customer's cage or rack and run underneath the 30 inch high raised steel floor

Dedicated Power Distribution

  • Uninterruptible Power Supply (UPS) systems eliminate spikes, sags, surges, transients, and all other over/under voltage and frequency conditions, providing clean power to connected critical loads. Incoming AC power is converted to DC and then back to AC, therefore ensuring perfect power is delivered to mission-critical systems. UPS acts as a power "cleaner" and provides power surge suppression.
  • Dual UPS systems consist of four (4) Powerware modules each, always maintaining N+1 modules within each system, resulting in 2N Redundancy Total.
  • Two (2) Battery Rooms support the UPS Systems. Gel cell batteries have a shelf life of 19 to 20 years. Fifteen (15) minutes of battery backup is available at full load (i.e. 90 watts per square foot). Battery Bank Testing machines continuously monitor each Battery Bank to ensure optimum operating availability
  • Twenty-two (22) Power Distribution Units are located on the data center floor.
  • Generators are automatically powered up when commercial power is interrupted for more than 15 seconds.

Backup Generator

  • Ten (10) 2 Mg. (2,000 kW) Caterpillar brand diesel generators (N+1) with four (4) generators currently supporting Phase 1a
  • Each generator costs approximately $1 Million and can power a small city with a population of 50,000 to 100,000
  • Four (4) 20,000 gallon double-walled diesel fuel storage tanks located underground, supply the generators
  • Each generator has a belly tank that holds an additional 500 gallons with a minimum 2-day fuel supply on site at full load
  • One (1) 2,500 kW Load Bank (Saturn brand) for testing purposes vs. unit substation, allows placement of an artificial load for testing generators and UPS systems

Climate Control

  • Airflow brand Computer Room Air Conditioners (CRAC) units. Chilled water turns into cooled air via the inside coil system and is distributed under the raised floor and up through the vented tiles. Twenty-six (26), 30-ton Computer Room Air Conditioners in IDC (N+1 redundancy for every third CRAC unit = Currently almost N+9 redundancy)
  • Overhead air handling units located in the ceiling for even more redundancy
  • Cooling Towers consist of four (4) Marley brand cells which supply water to Chiller plants
  • Chillers consist of three (3) Carrier Evergreen 600-Ton chillers (N+1). The water is chilled to 45°F. Three (3) chilled water pumps support each of the three (3) chilled water loops. Delivers chilled water to pipes, which travel under raised floor to Computer Room Air Conditioning Units
  • Two (2) Plate Heat Exchangers provide maximum utilization of cooling system on cold days by using outside air instead of the chillers. Used to provide "free" cooling (in lieu of chillers) when outside temperature is below 40°F
  • Fire Detection & Suppression
  • Very Early Smoke Detection Apparatus (VESDA) is a state-of-the-art active laser air sampling system. 100 times more sensitive than conventional fire detection systems
  • Conventional smoke and heat sensors are cross-zoned throughout the center on the ceiling and below the raised flooring
  • Fire extinguishers are located on the center floor for human intervention. Data Center staff, including the security team, has been trained
  • Orange-colored pipes located in ceiling, and beneath raised floor, are available for the pre-action dry-pipe fire suppression system. This system is easier to control, more effective, and less harmful to equipment than chemical alternatives. No water is stored in the pipe.
Infrastructure Diagram

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