What is Availability?
Availability is a measure of the ability of a system or service to be operational and accessible when required for use. It is typically expressed as a percentage and represents the ratio of the time a system is available for use to the total time it should be available, considering both planned and unplanned downtime.
For example:
If a website has an availability of 99%, it means that the website is operational and accessible 99% of the time and unavailable 1% of the time due to maintenance, updates, or unexpected issues.
Reliability vs Availability: What’s The Difference?
When it comes to technology and systems, you might hear the terms “reliability” and “availability” used a lot. But what do they mean, and how are they different? Think of reliability as how often something works correctly and on the other hand, availability is about how often something is ready to be used. In this article, we’ll break down the differences between reliability and availability in a way that’s easy to understand.