Princeton University – Campus Network Core Relocation

Princeton University required the relocation of the campus network core from the existing data center to an abandoned data center across campus. The project initially included replacement of existing campus chilled water computer room air-conditioning (CRAC) units and uninterruptible power supply (UPS) equipment, as well as the redistribution of power from two new UPSs for redundancy. The scope included replacement of lighting, new paint, raised floor tiles, and provision of new cable tray and security devices. Computational fluid dynamics (CFD) modeling was performed to optimize and confirm the layout of CRAC units and perforated floor tiles with consideration for underfloor obstructions and redundancy scenarios.

During design of the initial scope of work, it was determined that the campus chilled water system was less reliable than originally thought and that backup cooling was required. It was also determined that the existing standby power generator did not have sufficient capacity to accommodate the network core equipment. Precis designed a new backup cooling system, comprised of a modular air-cooled chiller with redundant modules, redundant pumps, redundant heat exchangers to interface with the campus chilled water system, a roof screen, all associated power and piping distribution through three floors, and building automation. Precis also designed all new standby power infrastructure dedicated to the network core, including a 500kW generator concealed behind a new enclosure designed to match the aesthetic of the existing building.

These renovations prepared the data center for relocation of campus server equipment, vendor equipment, network switches, and re-routing of associated fiber feeds to each campus building by university IT personnel.