mechanical systems design and construction phase services for
renovation of 6,000 sq. ft. existing and 17,000 sq. ft. expansion of
the SunTrust Durham Data Center.
Eighteen air-cooled computer
room air conditioning (CRAC) units were utilized to serve
the new data center, each MDF room, and the new UPS Room.
Each CRAC serving the data center and UPS room is 30 nominal
tons, and each CRAC serving a MDF room is 5 nominal tons.
N+1 redundancy was provided for each space.
A refrigerant piping
distribution system was provided between twenty-two air
cooled In-Row air conditioning units mounted directly in the
high density equipment racks and their associated condensing
units located on the roof. Hot aisle containment was
utilized in the high density areas to isolate this heat load
from the general data center space.
A new under-floor leak detection
system was provided around the perimeter of the new and
existing data center.
A new 10,000-gallon double
walled aboveground fuel tank was added to supplement the
existing aboveground fuel tank. In addition, two new
600-gallon daytank systems were provided. The daytank fuel
piping distribution system was designed to provide system
redundancy; any of the four new generators can operate from
either daytank. A new electronic system monitors the fuel
system for inventory and leaks.
A FE-25 clean agent fire
suppression system was installed throughout the new data
center and MDF rooms. In addition, a double interlock
pre-action dry pipe sprinkler system with dedicated zone
valve was installed for both the new data center and the new
The design and construction were
phased so that the existing data center could remain in
operation while the 17,000 sq. ft. expansion was built.