From the course: AWS Certified Advanced Networking - Specialty (ANS-C01) Cert Prep

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High availability vs. fault tolerance

High availability vs. fault tolerance - Amazon Web Services (AWS) Tutorial

From the course: AWS Certified Advanced Networking - Specialty (ANS-C01) Cert Prep

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High availability vs. fault tolerance

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- [Presenter] High availability and fault tolerance. Are these two things the same, or is there a certain difference between the two? If you say a system is highly available, does that mean that this is also fault-tolerant too and vice versa? You'll be surprised to hear that many IT professionals nowadays do not have the right understanding of high availability and fault tolerance, even those who are already in the IT industry for a long time. These two concepts are quite similar to each other, and sometimes people use these two terms interchangeably, but are they theoretically the same? Both high availability and fault tolerance have the same objective of ensuring that your application runs all the time without any system degradation. However, these concepts have unique attributes that differentiate them from each other. These two differ in cost, design, redundancy level, and behavior and component faults or failures.…

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