Section 14.130 Redundant Site Considerations Flashcards
Objective 3.4 Explain the importance of resilience and recovery in security architecture
Redundant Site
Backup location or facility that can take over essential functions and operations in case the primary site experiences a failure or disruption
Types of Continuity Locations
1 Hot Sites
Up and running continuously, enabling a quick switchover
● Requires duplicating all infrastructure and data
● Expensive, but provides instant availability
Types of Continuity Locations
2 Warm Sites
Not fully equipped, but fundamentals in place
● Can be up and running within a few days
● Cheaper than hot sites but with a slight delay
Types of Continuity Locations
3 Cold Sites
Fewer facilities than warm sites
● May be just an empty building, ready in 1-2 months
● Cost-effective but adds more recovery time
Types of Continuity Locations
4 Mobile Sites
Can be hot, warm, or cold
● Utilises portable units like trailers or tents
● Offers flexibility and quick deployment (e.g., military DJC2 - Command and control quick set ups for mobile command centre)
Platform Diversity
Critical for effective virtual redundant sites
■ Diversify operating systems, network equipment, and cloud platforms
■ Reduces the risk of a single point of failure
■ Ensures resilience and adaptability in case of disruptions
Virtual Sites
Leveraging cloud-based environments for redundancy
Virtual Sites
Virtual Hot Site
Fully replicated and instantly accessible in the cloud
Virtual Sites
Virtual Warm Site
Involves scaling up resources when needed
Virtual Sites
Virtual Cold Site
Minimises ongoing costs by activating resources only during disasters
■ Offers scalability, cost-effectiveness, and easy maintenance
Virtual Sites
Geographic Dispersion
Spreading resources across different locations for higher redundancy
■ Mitigates the risk of localized outages
■ Enhances disaster recovery capabilities
Considerations for Redundant Site Selection
Think about technology stack, people’s workspace, and long-term support
■ Determine which type of redundant site suits your organisations needs
■ Ensure continuity of essential functions and services in the event of disruptions
