Power Resiliency - CompTIA Security+ SY0-701 - 3.4
Understanding Power Management in Data Centers
The Importance of Power Supply
- The foundation of all technologies is the power supplied to systems, necessitating extensive engineering of data centers to meet power needs.
- Data centers rely on local power providers and cannot control the availability of electricity; outages can lead to significant operational disruptions.
Managing Power Outages
- Outages can last from minutes to days, requiring systems designed for continuous access to electricity during such events.
- Uninterruptible Power Supplies (UPS) are essential for maintaining operations during blackouts or voltage fluctuations (brownouts and surges).
Types of UPS Systems
- Lower-end UPS options include offline or standby models that switch from main power to battery backup when needed.
- Line-interactive UPS systems can adjust voltage levels gradually, beneficial in areas prone to brownouts.
- Online UPS (double-conversion UPS) continuously runs on battery backup, eliminating concerns about switching between power sources.
Features and Considerations for UPS
- Battery capacity is crucial; a properly sized UPS ensures operation during outages without complete depletion of battery life.
- Additional features may include outlet numbers and surge suppression capabilities for connected devices.
Long-term Power Solutions: Generators
- For extended outages, generators provide long-term backup as long as fuel is available; they can supply partial or full building power.