Title: High Availability
Course: 2016FA-MCO-115-401 > Section: Module 6: Information Technology

Click here for a downloadable version of this document: High Availability

As the market continues to expand into online services, the amount of time these online services are available becomes increasingly critical. This amount of availability is measured in the industry as "nines." This is a reference tool that illustrates the level availability of services and denotes how much downtime is acceptable for each level. More critical systems need a higher level of availability, or more "nines." As you can see, the amount of acceptable downtime goes down and the "nines" go up.

Familiarizing yourself with these terms and the different levels of availability is important for anyone who is considering working with online services or at a data center.

Click here for full view (EXTERNAL): High Availability Chart