Data centers have their own emergency power priorities, but egress lighting still has to meet NFPA 101. Here's how central battery fits into a UPS+generator world.
Egress ≠ IT backup
A data center's UPS + generator power is designed to keep the IT load running. Emergency egress lighting is a separate life-safety system. They share a building but serve different purposes. Don't try to run egress lighting off the UPS — UL 924 and NFPA 101 are specific that emergency lighting be backed by a UL 924 listed source.
White-space lighting considerations
- Recessed downlights (Phoenix, Obsidian) are preferred — they clear rack heights and don't block airflow
- High-bay options (Orion) work well in mega-data-hall layouts with 14–20 ft ceilings
- Exit signs must be visible from every aisle — plan for every row end plus T-intersections
- Sage Live™ monitoring is valuable: DC facility managers want to see emergency lighting status in their NOC dashboard alongside generator and UPS status
NOC and MMR emergency lighting
Network Operations Centers and Meet-Me Rooms are typically occupied 24/7 — emergency lighting needs to support staff exit during an outage. Central battery is strongly preferred because staff in these rooms are used to clean indicator lights and zero ambient noise; integral battery fixtures with ventilation and test-button LEDs don't fit the environment.
Commissioning
Data center commissioning (often Cx Level 5) is rigorous. Every emergency lighting fixture will be tested during the full-facility pull test. Sage Live™ produces the test log automatically — a significant time save during Cx.