O'Reilly logo

Learning OpenStack High Availability by Rishabh Sharma

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

How to measure high availability

In order to measure a system's high availability, we usually check the total duration of the uptime of the system. For example if system availability is 99 percent, it means that the system is operational for 8672.4 hours throughout the year because the total hours in a year is 8760.

The following formula is used to calculate the total availability, and availability can be increased using high availability techniques to increase MTTF and decrease MTTR that we are going to discuss in this book with respect to OpenStack .Let's understand these term in more detail:

  • Mean time between failures (MTBF): MTBF tells us the estimated time between two frequent failures within a process or a component, which can be repairable. ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required