December 2019
Intermediate to advanced
494 pages
11h 41m
English
High availability (HA) and disaster recovery (DR) may seem like similar terms because they help ensure that the environment is up and running most of the time. Although both of them are business continuity solutions, they are quite different in the way that they work.
High availability is concerned with the uptime of the infrastructure, applications, services, and so on. The goal of high availability is to maintain SLAs for 99.99% of uptime against common outages caused by hardware failures, network failures, and so on.
On the other hand, disaster recovery is concerned with disasters, such as natural disasters, security breaches, and data loss.
Together, high availability and disaster recovery ...