What is the difference between high availability and fault tolerance?

What is the difference between high availability and fault tolerance?

High availability ensures a system is operational and accessible most of the time, while fault tolerance allows a system to continue functioning even when some components fail.

Can you give me examples of each?

Sure! An example of high availability is a web server cluster that redirects traffic if one server goes down. Fault tolerance can be seen in RAID systems that continue to operate even if one disk fails.

Which one is more important for a business?

It depends on the business needs. High availability is crucial for services that require constant uptime, while fault tolerance is vital for systems that cannot afford any downtime.

How do I implement these in my infrastructure?

You can implement high availability by using load balancers and redundant systems, while fault tolerance can be achieved through data replication and using failover mechanisms.