Infrastructure systems provide N+1 redundancy, with power utility feeders and the chiller plant partly redundant. If one feeder fails, the generator plant will assume augmentation, guaranteeing uninterrupted operation. If one chilled water circuit out of four lapses, the others will maintain cooling. There is full redundancy in the utility transformers, the electrical distribution system (switchgears, panel boards and feeders), the emergency generating plant, and all UPS systems.

Designed for high-density server arrangements, the data center’s climate will be stable at 72° F and 50% humidity. Four Liebert downflow, 60-ton capacity chilled water units, with cool air distribution via the raised floor plenum
and perforated tiles control this environment. Hot/cold aisle layouts ease heat removal and rack-mounted cooler units sit atop all cabinets, furtherlowering heat released into the hot-air aisle. Outside the building, two 300-ton, nominal-capacity air-cooled chiller units, each with a two-pump circulation system and two chilled water circuits, supplement the interior cooling sources while ensuring redundancy.

The local power utility company supplies two 4160V feeders to a newly built transformer vault on the property. If one utility feeder fails, double-ended switchgear allows the site to maintain power. This switchgear further creates two partly redundant systems – Side A and Side B. When added to the support of the generating system in case of one feeder failure, this creates a full N+1 configuration. The Side A/Side B setup continues down to individual data center cabinets via distribution panel boards supplying climate control and UPS systems.

Three 1000kW generators, connected in an N+1 redundancy system, provide emergency power to the facility via two automatic transfer switches (ATS) mounted at the double-ended main switchgear. To provide 55 hours of generator operations before refueling, a UL-rated tank at the on-site generating plant holds 10,000 gallons of diesel fuel.

Two Liebert 1000 kVA, battery-equipped UPS systems allow 20 minutes of battery backup. The systems’ auxiliary maintenance switchgear prevents server power interruption and the battery monitoring system is capable of overseeing UPS batteries from a remote locale in real time. Because the UPS systems connect to power distribution as Side A/Side B, if one fails, the second one can support every client cabinet in the data center. Ten power distribution units (FPC) mounted in the data center disseminate UPS power. Equipped with a step-down (from 480V to 120/208V) transformer and a monitoring panel capable of displaying local and remote monitoring of voltage, current, and frequency, these units also can display FPC status. Five are connected to Side A UPS, five to Side B. Two power supply circuits – one from FPC Side A, one from FPC Side B – power each server cabinet.

A VESDA early warning detection system and FM-200 fire suppression system protect the data center.

Our Data center grounding and support equipment grounding complies with Telecordia specifications NFPA-70 frequentations and IEEE 1100 (Emerald Book). The building’s lightning protection system includes an underground grounding conductor installed in a loop configuration with down conductors connected to lightning air terminals on the roof in compliance with NFPA-780. Two TVSS surge protection units are installed on the main switchgear.