Redundancy or Better Gear?

About this interactive

The lesson's point: you can buy the best server, the best database server and the best internet connection, and something is still bound to fail. No provider and no piece of equipment gives 100% uptime. Redundancy is what gets close. Run more than one of each thing, so that when one goes offline another kicks in: more than one server, more than one database server, more than one connection. The lesson wants it everywhere: location, power, cooling, networking, hardware, software and services, and data. To sort a card, ask: after this change, if the thing fails, is there another one to take over?

What you'll learn

Tell a change that adds redundancy, so another component takes over when one fails, from one that only buys better equipment, which still fails sooner or later

Aligned to

CompTIA Security+

3.4 Explain the importance of resilience and recovery in security architecture.

Key terms

Redundancy: The duplication of critical components or systems to increase reliability and availability.
High Availability: High Availability describes systems designed to operate continuously with minimal downtime, achieved through redundancy, failover clustering, and load balancing to meet the Availability pillar of the CIA triad.
Failover: The automatic switching to a redundant system or component when the primary one fails.

Topics

Interactive Streak Sort

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