CISSP Domain 3: Data Center Fire, HVAC & Power

For a data center fire, the right answer is a clean agent or a preaction system, never plain water sprayed on live racks, because a server-room fire is a Class C electrical fire. This Domain 3 deep-dive walks the physical and environmental controls objective 3.8 tests: facility design with CPTED, the HVAC settings that keep servers alive, the six named power anomalies, and the fire suppression choice that decides whether a spark becomes a total loss.

With Mei, Erica, Kai, and Grace, we cover the precise vocabulary the exam builds its distractors from, so a brownout never gets confused with a sag and a clean agent never gets confused with a sprinkler. These are the foundations of site and facility security, mapped to the 2026 exam outline.

In this video:

• CPTED and its three strategies: natural surveillance, access control, territorial reinforcement
• Where to place a server room, a wiring closet, and a media vault
• HVAC positive pressure and the forty to 60% humidity band
• The six power anomalies: blackout, fault, brownout, sag, surge, spike
• UPS versus generator, and why you need both for power protection
• The fire triangle, the five fire classes, and the data-center suppression choice

The next video moves into security architecture and engineering models, the principles that govern how secure systems are designed. Anchored to the (ISC)2 CISSP Detailed Content Outline effective April 15, 2024.

Presented by Professor Erica — CISSP, CISM, PMP, M.S. Project Management, D.B.A. in progress.

▶ Watch next: CISSP Domain 4: OSI, IPsec, TLS & VoIP Security https://www.youtube.com/watch?v=I7tOcJFEoXY

📺 Full playlist: CISSP (2026) v2 https://www.youtube.com/playlist?list=PLlIAFxS2964_K3g6WysWnLpifoxilduGi